"Genuine Christianity is about self-denial, not self-empowerment."
I can do all things through Christ who strengthens me. - Phillipians 4:13
If that ain't self empowerment, I don't know what is. The Word says I can do all things. G-d himself has empowered me.
Then you come to, "I can do everything through Him who gives me strength."
I see nothing in there about God-given right to prosperity. Actually, your verse is a wonderful example of true Christianity. Christ becomes everything. We become nothing.