So the next thing you need to do is spend time on all the things you ARE capable of doing, because everything you stated were issues with low self-esteem. You also gave superficial examples of this.

I also suffer from low self-esteem, and I wrote down 100 skills, talents, and gifts that I possess written in pretty colors. Yes, most of them were very basic, trivial things, and at the end I highlighted the ones I was most proud of but it's hard to feel useless when you have an entire list of reasons why you are more than just your self-esteem and more than worthless or useless.