Changing (Who I am)

I used to know who I was,inside and out.But now,I'm not so sure.I've changed so much....inside.I'm strogner, but at the same time so much weaker.I'm confused about everything.Every little thing stresses me out.I don't know whats wrong with me.I'm so lost.Lost inside my confused mind.Who am I?
I'm changing so much,Losing everything I knew about myself.