Stop blaming other people or uncontrollable circumstances for your difficulties. Own it, realize you are 100 % responsible for how you feel – and that you can change how you feel without anything else changing – and that will improve your entire life.
You are in charge. Forgive the one who hurt you, no matter how badly he hurt you. Drop the victim mentality, stop your complaining – there is always a reason why some people hurt others, choose understanding, empathy and fucking let it go. 🙏