Hi Nicolas
Well, once I was done with the big-time rebelling, I studied philosophy, psychology, eastern mysticism, western occultism, alternative states of consciousness, socio-biology, sociology...anything to help me understand PEOPLE.
With my own home-made version of cognitive behavioural therapy, I started to note when my 'cult' mind was intruding, set it to one side, and try to actually be true to myself.
I too still have, to a certain extent, the need to please other people; we are so used to the acceptance of others based on our holding the same beliefs and behaviour patterns, that it takes time and practice to realise that you can be liked and accepted just as you are, whatever your strengths and weaknesses.
Like everyone here who says read, read, read, I thoroughly agree. I also think it's a mistake to reject Christianity in ignorance, because JWs don't actually teach Christianity. It's worth reading some decent Christian apologetics, like C S Lewis's 'Mere Christianity', Philip Yancey's 'What's so Amazing about Grace', and Lee Strobel's books 'The Case for Christ' and 'The Case for Faith'. Inform yourself about Christianity and if it's not for you, fine, at least you'll be making an informed decision.
It's great that you're at college and making friends; all of these experiences will help to establish your personality independent of the cult identity. You seem very self-aware and honest with yourself, which is another great achievement and advantage.
I also happen to think it's a good idea to do some things that JWs are scared of; watch some 'demonic' horror movies, get a crazy hair style, maybe play the fruit machine a bit, light up a spliff, give yourself an 'apostate' nickname if it helps, be untidy, get on board, enjoy the ride.
In the long run, what helped me most was support boards like this one, a good therapist and a good church - that and opening my eyes to what is actually happening around me instead of seeing things through JW-tinged glasses (you know the kind, they got a sticky plaster in the middle and really thick lenses and still everything looks vague and fuzzy).
Hope you've picked up some good suggestions here, Nicolas - now get out there and explore!