It can't fix everything

I feel like most things in my life always come back to one central idea:

I need to keep the peace, I need to make certain that everyone and everything is held together okay , and make absolutely certain that nothing and nobody is upset at me.  And so I sacrifice my time, my right to have an opinion, and my sanity to ensure that everyone else is alright.  I know that it hurts me, and probably ends up making everyone worse off in the long run, but I can't let it go.

And I don't know why.