Also what was really a gamechanger for me is gratitude. You can easily get caught up in a spiral of negative thoughts and emotions. By starting and ending your day with concious focus on the positive things in your life you slowly but steady rearrange the wires in your head and get more positive day by day. Try a diary or something if it helps.
And there are positive aspects everywhere. You just have to look for them in your life. I think even the things you hate the most in your life have a positive side. Everything has. Thats yin and yang ☯️ of life. And it also means: the deeper the valeys, the higher the mountains … ☀️