Sounds like good advice from Looker, maybe keep the smokin to just at the weelends, keep going to school and work hard at it, one day you might be glad you did, a good remedy for feeling depressed is HARD regular physical exercise. I know how hard it is for stoners to motivate themselves in this area, but just bite the bullet and try it, stick on a personal stereo and go for a long run or bike ride, or take up some martial arts classes, these can do wonders for confidence and self-esteem cos you're going round with the knowledge you can look after yourself.