I too have only recently became aware of everything around me and im finding it hard as everything around me is so depressing. Im having so much trouble sleeping cos life means nothing to me now. At the moment im studying and hav a part time job. Being busy keeps my mind off the more important things that make me depressed. Im still depressed and constantly anxious. Reading spiritual books may sound lame but does help plus it uses time that you may usually use pondering the inevitablities of life. I dont know whether youll get over this feeling bcos im still going through it myself. I recently had a 6 week break off all drugs and although it helps a little i dont see any great benefits. Keep smokin weed if you want and get off the rest of the stuff ur on bcos it wouldnt be helping. Time may be the answer as over time your mind might figure out ways of coping with this new way of thinking. This may not be helpful but i thought id add a comment bcos what you're suffering is very similar to what im going through. Good luck Hope all goes well