What is my strength?

This question is worthless until I'll be a famous. I would like to say I don't have any strength because i don't have any success in my life. But by the way I have something which may be consider as my strength.
I'm a single direction person. I don't like rest until I got success. I get angry very easily. When I'm angry I can work more than in normal condition.I'm a hard working person.

I think my strength is self confidence because I'm always ready to meet challenges. I can dictate myself toward my work and I never give up easily.

My next strength is I believe in do it now.