I'm a university student. I'm very shy and cowardice. As for me, the most troubling thing is that I'm not confident at all. Do you have any advise for me?

I am not sure retrieve is the right word here. You need to build your confidence. You should start by stopping the negative comments about yourself. "I'm very shy and cowardice. As for me, the most troubling thing is that I'm not confident at all." Focus on your strengths and build those strengths. Do some research. There has to be loads of information on the internet.

What would I like about you?