I think most of us feel like we don't know much about self-love. But i bet everyone knows a little. Sometimes we know what not to do, and even knowing that can help us know the opposite will probably work.
Star, i have trouble with negative thoughts, too. I call it "picking at myself." I noticed i do it more when i am stressed or over-tired, or if someone has been angry with me. Now i try to reduce my stress, get sleep before i get too tired, and avoid toxic people. That helps some.
I also try to be aware when i am thinking negative things about myself. I don't always notice... i'm guessing it is that way for other people, too. But when i do notice i try to stop, then tell myself no, then say something nice about myself. I think also it helps to generally say more nice things about myself.
What if we kept a journal (or wrote here) and had to say three nice things about ourselves every day?
I know i love my friends very much.
I know i try very hard to do better.
I know i'm good at knitting.
Is it hard to say nice things about yourself? Try it here and see if you are uncomfortable doing it.