Ifer123 is right, I would add though that you may need to see 1st your local dr & then a cousellor to start - it rather depends on what country/state you reside in & what services are available (free/cheap/or$$) here there are kids help lines which I understand are great. There may be social/community/interest/hobby groups too that you might consider joining if you need to get out of yourself abit & do something different just for fun!!
Remember parents aren't usually the enemy (or at least we don't intend to be!! ) but sometimes it seems that way, still give them a chance, but also find someone mature & responsible to talk to, don't get led astry & end up doing heaven knows what!!