Hey Nagir, about those cigarettes. I have smoked for about 3 years fulltime and I simply quit because I turned my thoughts around. Instead of looking at it like "Ah... time to smoke a cig, get away from everything" I now think "Let's smoke a cig so I can poison my body while gaining nothing positive from it!" which is in fact the truth. Just the thought puts me off immediately. Also it costs a lot of money. Besides that, when I would jog or go to kickboxing I'd have more trouble breathing than when I would not smoke and it was bugging me.

Things that will benefit you in the future is maintaining a healthy lifestyle. You mentioned exercising, so I assume you mean weightlifting or some form of cardiovascular exercise. How about martial arts? It might save your life someday.
Ask yourself this question: What do I want to grow in?
It can be anything, personality wise or perhaps skills like drawing or making music and then focus on that goal.