Start by saying to self: everything is fine. I am grateful, I am happy. I have all that I need. Listing things help alot too, they don't have to be big stuff, or special even. Just reminding self of good things that you didn't expect. And having health, looking well, having good food (generally provisions).
Look at selfies from past and now. Things that help me see progression or improvement.
Learn something slightly off or "not your thing".
Talk nicely to yourself, the way you would cheer someone you love.
Spoil yourself, and cut yourself some slack.
Trawl https://www.reddit.com/r/Damnthatsinteresting/
Listen to music that makes you feel good.
Work out, even if it's just a walk. Admire things you walk by. They don't need to be stunning. But the fact that you noticed, feels good to you.
Talk to a friend or a stranger. Complimenting someone is like complimenting yourself. It reveals more about you than the other person. You can compliment yourself too!
Caress your own face. breathe and say, I am loved, I am precious. Even if I don't know where things are going, I will be my own biggest fan.