Alcohol. I stopped smoking weed/haschish at 18( was smoking 10 blunts per day or so ), cigs at 25 and alcohol this year. Alcohol was definitely the hardest to stop. I ran into so much trouble with it I am impressed nothing tragic ever happened. Nothing better than the pure healthy, sporty, sober life I am experiencing now.
Gave up caffeine. Abused it for years. Now for the life of me, now that it's completely out of my system, i dont know why i bothered, and i wonder how much damage i did with all those energy drinks and cups and cups of coffee, day after day.
Continue. I have recently discovered a guy I was often skateboarding with before was actually an heroin addict. I never ever suspected anything and I was skating with him 3 times a week, sometimes doing road trips on WE. A genuinely nice guy( too polite sometimes ) but who definitely lacked self-confidence. You could feel that there was a problem but I just thought he was depressed because he had dropped out of his equivalent of PhD in France( doctorat ). I was telling him how much I hated some Spanish cities because of the syringes you find everywhere in the streets. He never said anything.