I think I should give up on life because I believe I was doomed to be a loser.
I am sorry to hear you are having these feelings. Why do you think that you were doomed to be a loser?
I don't have a successful education and I don't feel like I'm good at something. I don't have a talent.
It is not okay to give up on yourself and life. A talent is something that can be developed, just consider what you want to be good at and work towards it. It's important to have confidence in yourself and this will help you develop that.
I'm just going to fail.
You should try to focus on your talents and shift your perspective to things that make you feel confident about yourself.