Did you ever sit down and just write down the names of your friends and acquaintances?
Do that, and then think of something good about them: maybe they are a good cook, a ‘fun’ partner, a confidant, have nice hair, pretty eyes, cute ears, an interesting or humorous attitude- just anything that is nice. It is hard to be angry with or hate someone when you find something nice about them. I know that sounds a little Pollyanna-ish but that is what my parents taught me.
I find it hard to dislike people for more than a short while. Something always pops up and I remember something I like about them…except Idi Amin. I didn’t know him well enough to get past the fact that he was a brutal murderer. Or maybe Caligula, but he lived a long time ago.