I think the top two are
1. Death
2. Yourself
Ememeon already talked about death, so this is my thought on self-acception
I personally have many areas where I just have to accept myself for who I am. Things like my sexuality, my looks, my social abilities, my personality, and etc can be pretty hard for me and I know pretty much everyone at some point. I try to tell myself like "I'm straight" "I'm socially confident" when I know that's not true.
I don't know how to conclude that but whatever so yeah that's my thoughts