What is your understanding of morality?

All morality is based on the axiom that all human beings are intrinsically valuable. That includes you so don't be too hard on yourself. Morality is about respecting the intrinsic value of other people. There are a lot of different ways to do this and much debate over it but that is how you should try to live your life if you want to be moral. Treat others as if they are valuable and ask that they do the same to you.