Never Enough

By Judith Grisel

9 min read

Why does it matter? Because addiction isn't a character flaw or a broken brain — and that mistake is costing lives.

Most of us carry a quiet verdict about addiction: somewhere between moral failure and broken circuitry, a person who just couldn't hold it together. Judith Grisel carried that verdict too — until she became both the scientist studying addiction and the clearest evidence against her own assumptions. What she discovered, after a decade of using and a career mapping what drugs actually do to the brain, is that the brain caught in addiction isn't broken — it's doing exactly what healthy brains do: adapting. That single insight — that the brain's greatest strength is precisely what makes addiction an inescapable trap — reframes everything. Why willpower fails. Why punishment rarely sticks. Why relapse can arrive on a humid afternoon thirty years later, triggered by nothing but a particular quality of light. And why the only real path out has almost nothing to do with biochemistry.

The First Drink Doesn't Feel Like Pleasure — It Feels Like Coming Home

Judith Grisel is thirteen years old, hunched over a half-gallon of wine in a friend's basement in suburban Florida, when she takes her first drink and feels something she can only describe as relief — the kind that makes you realize you'd been holding your breath for your entire life. Not pleasure. Relief. What struck her was recognition: she'd been enduring, and this was the first moment she couldn't say that.

Years later she'd see a plaque hanging behind a bar: "Alcohol makes you feel like you're supposed to feel when you're not drinking alcohol." It described her thirteen-year-old self with scientific precision: a return to baseline that normal life had never provided, not euphoria layered on top of an already adequate state.

The science behind that plaque turns out to be specific and uncomfortable. Researchers at McGill University found that people at high genetic risk for alcoholism carry roughly half the circulating beta-endorphin of low-risk individuals. Beta-endorphin is what your brain releases to signal safety, connection, and well-being. It's the chemical substrate of feeling like things are basically okay. High-risk people have been running this system at half capacity their entire lives. Then alcohol arrives. In those same high-risk individuals, drinking selectively floods the opioid receptors that beta-endorphin was meant to fill, producing a surge that low-risk drinkers simply don't experience. The gap, for once, was closed.

What closed in that basement was the emptiness she'd been carrying her whole life — depleted receptors finally getting what they'd been waiting for. She asked at thirteen why not everyone felt this way, why they didn't drink more and more often. The answer is genetic. For most people, the first drink produces some pleasure. For a significant minority, it produces the sensation of arriving home.

That asymmetry, in kind not merely in degree, is where addiction begins.

Your Brain Fights Every Drug You Take — And Eventually Wins

Imagine a thermostat that learns. Set it to 72°F and it holds there, adjusting heat and air conditioning to maintain the target. Force it to 80°F every day for a month and eventually it recalibrates — 80° becomes the new normal, and anything below feels cold. That's almost exactly what your brain does with every drug you take regularly.

Grisel uses her own coffee habit to illustrate. Before becoming a daily coffee drinker, her nervous system woke itself up each morning through its own arousal circuitry. Caffeine arrived and flooded that same system artificially, so the brain, wired to maintain stability, dialed down its natural morning arousal to compensate. Now she needs two cups just to approach normal. The caffeine isn't making her more alert than she used to be; it's restoring a baseline her own brain quietly withdrew.

The Third Law of Psychopharmacology: the brain counteracts every drug that affects it, always in the opposite direction. Richard Solomon and John Corbit formalized the mechanism in the 1970s: whatever the drug does (the a-process), the brain responds with an equal and opposite counteraction (the b-process). At first the a-process dominates and the high is real. But the b-process learns — with each exposure it gets faster, stronger, longer-lasting, until it nearly cancels the drug's effect entirely. That cancellation is tolerance. When the drug clears but the b-process keeps running, that's withdrawal.

Cocaine and coffee, different scales, same rules. The mechanism operates identically in every regular user of every mind-altering substance, and an addict's nervous system isn't broken; it's doing exactly what nervous systems do when flooded with a powerful stimulus on a reliable schedule. Grisel is direct about her own case: regular, heavy use produced her addiction; it didn't reveal something that was already there. Addiction is what normal learning looks like when the lesson is a drug.

Craving Isn't About Wanting the Drug — It's About What Your Brain Has Already Learned

Two years into sobriety, Grisel is in a neuroscience lab, injecting experimental drugs into rats. She'd performed hundreds of these injections by then, nothing remarkable. Then one day she pulls back on the syringe to check placement, and blood floods into the barrel. Her ears rang. Her mouth filled with a taste she recognized immediately: cocaine entering her own vein. No desire to use. No thought of using. Just a conditioned response firing on a single shared detail — blood in a syringe — from something her brain had learned years earlier.

She had a colleague finish the injections.

Cues can be nearly anything: a neighborhood, a time of day, the humidity in summer air. If you've spent years drinking at a particular bar on Friday evenings, walking through that door while sober (not intending to drink) still triggers the b-process. Mood drops, tension mounts, craving surfaces. The bar has become pharmacologically active. The nervous system learned it, and doesn't forget.

Addicts transplanted in the 1970s to rural therapeutic communities (programs that moved them out of their neighborhoods and away from their using networks) stayed sober for months. Then they came home. A former using partner on the street. A particular bar on a corner. A hypodermic glimpsed in a doctor's office. The b-process fired, and the relapse that followed seemed inexplicable to everyone except the neuroscience. The cue wasn't the drug. The cue was something the brain had learned to treat like the drug.

Cue exposure therapy reverses the strategy: deliberate, repeated presentation of those triggers in a controlled setting, without the drug following. Eventually the cue loses its predictive power, and the b-process quiets. The brain adapts again, this time to the absence of a consequence.

Some Drugs Don't Just Change You Temporarily — They Rewrite the Hardware

Most addictive drugs follow the same arc: stop using, and the b-process eventually fades, and the brain works its way back. MDMA appears to be different.

Grisel watched this happen to someone she knew. A student named Doug arrived in her laboratory one summer as an undergraduate: sharp, enthusiastic, the kind who offered ideas that shaped how experiments were designed. He was also, she later learned, moonlighting as a DJ at raves in a nearby town, where MDMA kept him in the booth through the early hours.

The following summer, Doug asked to return. She gave him the spot. The person from the previous summer was gone. He couldn't hold onto a conversation from hour to hour. His ideas scattered. He made beginner mistakes weeks in. She had to let him go — the lab used live animals, and his unreliability posed a welfare risk. They both knew what had probably happened; he offered it himself: maybe he'd done too much molly. Years later she passed him working as a bartender at a conference hotel. After that, she learned he had died by suicide.

What makes this more than a tragic anecdote is a study that put nearly a thousand people where Doug sat. Researchers led by Lynn Taurah examined multiple drug-use groups, including former ecstasy users who had been completely abstinent for at least four years. That group showed clinically significant deficits in mood, memory, sleep, and impulse control, and they were statistically indistinguishable from current users. Time off the drug had changed almost nothing.

The ceiling turns out to be lower than it looked — not because the b-process won't fade, but because some of what MDMA takes, it appears to keep.

No Single Factor Explains Who Becomes an Addict — And That's Not an Excuse, It's a Diagnosis

Why do some people spiral into addiction while others, living nearly identical lives, never do?

Grisel walked into graduate school expecting a clean answer. She chose to write her final paper on the epidemic of alcoholism among Native Americans, the highest rates of any U.S. ethnic group, assuming she'd find whatever faulty enzyme or neural quirk made these communities so vulnerable. She found no such thing. Decades of research had investigated genes, neurochemicals, brain wave patterns, liver metabolism. Nothing biological distinguished Native Americans from anyone else. What the data showed instead was poverty, unemployment, an abundance of cheap alcohol, and communities stripped of purpose and cultural continuity. Environment alone, without any special genetic loading, had produced catastrophic rates of addiction. If you exile a population with nothing to do and nothing to lose, you don't need unusual biology to explain what happens next.

That clears biology as the sole explanation. It doesn't vindicate willpower. Twin studies show identical twins are roughly twice as likely to share addiction histories as fraternal twins, so inherited biology plays a real role. But no single gene decides anything. When you compare the DNA of people with severe addiction histories against people without any, you find only statistical frequencies: this variant slightly more common here, that one slightly more common there. Each accounts for less than one percent of inherited risk. Grisel describes it as a deck of cards: thousands of them, red ones raising risk, black ones reducing it, no single card decisive.

After thirty years studying the question, she still cannot say exactly why her own use became unmanageable when a classmate's didn't. That's not a failure of candor — it's the diagnosis.

Fifty Years of Neuroscience and the Addiction Rate Is Still Climbing

Understanding a disease and treating it turn out to be different problems. Neuroscience has given us a precise account of what addiction does to the brain: the receptor changes, the blunted reward circuitry, the hijacked learning systems. The rates have kept climbing anyway. The field has gotten more sophisticated. The outcomes haven't.

The clearest proof that suffering and loss are not sufficient deterrents is a man named Levi. He and his wife were homeless in Boulder, having lost custody of all six of their children. That should have been sufficient. It wasn't. On Sundays, when city ordinances prevented alcohol sales, he improvised: he'd punch a hole near the bottom of a can of Aqua Net hairspray and drain it before his gag reflex could register the taste. He was also taking Antabuse, a medication that makes drinking agonizing by blocking the enzyme that processes alcohol. He drank right through the toxic reaction, explaining that his brain needed alcohol regardless of what his body thought. He froze to death on the banks of Boulder Creek — a man with a warm heart who had lost everything, suffered every time he used, and still couldn't stop.

Grisel's own case makes the point more quietly. The hepatitis C she contracted from shared needles in the 1980s cleared completely after a months-long course of antivirals. The brain's learned pull toward escape didn't. Recovery, she says, means staying a safe distance from something that hasn't cleared — not a cure, just a daily choice not to test it.

The Turning Point Wasn't a Pill or a Program — It Was a Dinner

Her father had spent years telling people he had two sons. When her mother wasn't home, he'd hang up without a word. Then he took her out for her twenty-third birthday — a tiny sushi restaurant, a few tables, a bar along one wall. She arrived a little drunk, calibrating her dosing carefully, hoping it didn't show.

She wasn't expecting much. That's what made the next moment so disarming: he looked at her and said, plainly, that he just wanted her to be happy.

She'd been braced for demands — go back to school, repay what you owe, fix your teeth. Happiness hadn't occurred to either of them as a relevant category. The words dissolved something. She started crying into her miso, in front of him and the waitstaff and every other diner in the room, admitting that despite arranging her life exactly as she pleased (no obligations, no limits, constant use) she was completely miserable. The armor she'd worn through a drug charge, evictions, withdrawal, and friends' deaths: a single sentence from her father dismantled it. He had simply been willing to be seen with her.

Grisel is careful not to frame this as a feel-good ending. The dinner doesn't cure anything. She never became someone who can have just one drink; thirty years later she still privately calculates alcohol content when her husband orders at the pub. What the dinner did was physical: human brains are shaped continuously by their connections with other humans. Disordered use feeds on isolation as much as it creates it. The b-process fires more reliably in empty rooms. The cues that trigger craving multiply when no one is watching.

Grisel's argument ends here. Addiction rises on a tide of loneliness; human contact is the raw material the brain needs to change. Her suggestion isn't elaborate: stop agonizing about the epidemic, and put your hand out to whoever is standing next to you.

What Thirty Years of Sobriety Doesn't Fix

The human brain is reshaped primarily by contact with other human brains. That's the sentence the whole book earns, and it hits harder than any of the neuropharmacology. Addiction finds its footing exactly where that contact breaks down — in the gap where the person you became is no longer legible to the people around you. The damage accumulates there. So does everything capable of reversing it.

That points somewhere inconvenient: the cure can't be fully separated from the person delivering it. What heals isn't just the intervention. It's the decision to keep showing up for someone who's made themselves very hard to show up for. The epidemic you're looking at isn't in the chemistry. It's in the distance between people — and the path back runs through someone willing to close it.