How addiction works

It is not a lack of character

People living with an addiction often hear, from others and from their own head, that they just lack willpower. "If I really wanted to, I would stop." Yet most people who drink too much, take cocaine every weekend or bet down to their last pound have already wanted to stop, and many have tried several times. This is not a flaw of character. Through a lot of repetition, the brain has learnt that this is the fastest answer to almost everything.

This holds for substances such as alcohol, cannabis, cocaine, nicotine and sleeping pills, and also for behaviours such as gambling and some kinds of gaming. The mechanism is similar. Understanding how it works does not take away your responsibility for what you do from here, but it does lift a weight that only gets in the way: the belief that you are a bad person.

What happens in the brain

The brain has a reward system whose job is to make us repeat what keeps us alive: eating, resting, being with other people. Drugs and gambling switch that system on with a strength and speed that ordinary life rarely matches. The brain records "this works, do it again" and, over time, gives that reward more weight than almost anything else.

Then comes tolerance. The body adjusts, and the same amount does less. You need more to feel the same and, without it, you feel worse than before you started: irritable, anxious, flat about everything. From that point, many people no longer use to feel good. They use to stop feeling bad. With alcohol and sedatives, this withdrawal can be dangerous: if you use every day, talk to a doctor before stopping all at once.

There is also a strange shift: liking and wanting come apart. Sometimes a person barely enjoys the effect any more, and the urge is still huge. That intense urge, the craving, is not a choice. It was learnt, and it responds to cues around you.

Cues: why the craving comes out of nowhere

The brain links the reward to everything that was around it: the Friday pub, the friend who always has some, your phone at eleven at night, Sunday boredom, payday. These cues become triggers. Running into one is enough for the craving to rise, sometimes with a racing heart and a dry mouth, before you have even thought about using.

This is why so many people do well on a trip or in a residential programme and start using again once they are back in the same neighbourhood, the same routine, with the same people. Their strength did not run out. The cues were waiting. Knowing yours precisely is half the work: not "stress", but "when I get home alone after a bad day with nothing planned".

What the habit gives and what it takes

Nobody keeps a habit that only does harm. It delivers something, and that is worth looking at honestly. For some it is relief: the mind stops spinning, anxiety drops, sadness stays away for a few hours. For others it is belonging, because it is what the group does together. For others it is energy to get through hard work, or the nerve to talk to someone at a party.

On the other side of the scale sits the bill: money, sleep, health, the trust of people close to you, missed chances, the shame of the next morning. Once you see both columns, the conversation changes. Instead of "I am weak", the question becomes "how can I get that relief, that company, that energy, in a way that costs me less?".

Wanting and not wanting at the same time

If part of you wants to stop and part of you does not, that is expected, and it has a name: ambivalence. It does not mean you are not taking this seriously. Nearly every important change starts this way. What tends to get people stuck is pressure, because when someone pushes, we tend to defend the other side. Good professionals do the opposite: they help you hear your own reasons, at your own pace.

Change also comes in stages. First "it is not really a problem", then "maybe it is", then getting ready, taking action and keeping it going. Slips are part of it and do not erase what you have already done. You do not have to decide today to stop for ever. You can start with one small, concrete step: tell one person, book an appointment, pick two days a week without using and pay attention to what comes up on those days.