An outsider

And suddenly I became an outsider. The most interesting thing was that , I isolate by myself.
I didn´t wanted to be a part of that , because I knew that I would feel like an outsider.
I really need to go away , I really need to forget who i am.
The worst part is that when I come back , I will be again the outsider.
How did I became an outsider with my own square? 
I just feel I don´t belong to this new thing , I´m on a higher or lower maturity level.