Who am I

Why do I base my life
My existence
On someone else
Why is acceptance important
From all and from him
For which I am ready
To pretend
To lie
To take forms
And please him
Make him happy
Stronger
Empowered
And after all that,
I'm left with some part of myself
I'm not sure how much of it
Is me?
Is him?
Is someone else?
And on my deathbed I shall wonder
Who really am I?