I'd advise you to lose the joints and do something healthy like exercise or a new hobby. A lot of my friends who smoke are often emotionless and unmotivated.
What ever the therapist tells you, (If you'll go) Don't ever ever take anti depression pills, I've seen a documentary about it and people usually take their own life after taking those pills
do NOT drop out of school. as many people have said already...exercise. also improve your diet. these things work great to keep me feeling good. and when i dont exercise and eat healthy i feel a noticable (worse) difference.