I know you don't know but something else, like what? I wouldn't quit what you are doing just because you don't enjoy whatever it is until you have something you do enjoy in front of you to go to. One doesn't quit a job until they have another job lined up or one can end up in financial difficulties, at the least.

You need a plan of what you want to do; not considering school, other people, etc., just what makes you happy and what you are trying for. If you don't know, try a self-help book or two on the subject (I like this one: http://wishcraft.com/) and get excited about your whole life so you don't even have to think when someone asks, "what do you want?", you'll be so excited they may ask you to shut up instead :-)