From the Trainspotting movie What does renton want in life? Who are his helpers? Who are his opponents? Why did he develop such a desire ? Consequences of his actions

I suppose that Renton figures out that he really wants a new life free of drugs. Mark Renton is a smart young man with a major drug problem. Renton is addicted to heroin and totally immersed in Edinburgh, Scotland's, underground drug culture. Renton crashes in a small, untidy apartment with his friends, all of whom live in anticipation of their next hit. They go out at night to clubs, but for the most part, their everyday lives revolve around their drug use.