Realizing people are complete garbage has helped me.
I'm such a caring person that I've always put the needs of others before mine until recently. I always thought I was being rude if I excluded people in life. Clearly, it's not rude and highly recommended. I use to think a friend not going to a party/event because "someone" else was going to the same party that they couldn't stand was being immature and selfish. Now, I completely understand.
From now on, the second my gut feeling & first impressions tell me a person is unkind, disrespectful, selfish, grotesquely racist/bigot, etc., I will consider them garbage. They're just another parasitic user looking out for themselves only. They probably even calculate how much they can use a person the minute they meet them.
It's not just employment that requires an interview. From now on, all new people in my life will be fully interviewed and considered garbage unless I get something out of the relationship. Period.