Too much

Why do I have this need to explain myself too much about where I came from, when I don't have the need to tell anyone why I am here today?
I had my path and it does explain a lot of who I am, but sometimes I feel [in some wrong way] that I have to explain why. When actually I am who I am, and don't have to feel sorry for that, neither explain why...
No matter if my life was half easy, half hard...it was all a big mess and made me who I am today...so I wonder why I find myself always feeling guity of all the chances I had...
When I know, in the middle there were more struggle than easy ways...so why do I feel guilty for that...
I definetely souldn't