What should i do with myself?

Hi all, im real confused at the minute. Well to tell you the truth i have been since ive been about 15. No, im not about to come out! Im actually confused because i really dont feel at home in society, i dont mean im an outcast, i have plenty of friends who i love and a good family, but i have the un explainable desire just to say, "screw it" and to just get away from civilisation. This isnt just some weird dream, i get pangs of desire to just emigrate all the time, i cant stop thinking about it either. I dont know whats wrong with me, its really, really weird. Any advice?