Tbh quite a few people, over two things.
First are the people who say one thing, but act differently. When I try to call them on something, they deny it. What I should have done was to STOP TALKING immediately, and as soon as possible, write down what happened.
The other was having to work so hard to get anyone to talk to me. After I started talking more, I lost the only quality that ever drew people to me: mysteriousness. What I should have done was find more hobbies to get into, and then attend gatherings or go places where I could do or talk about that thing with other people also involved in that hobby.
Well, maybe three. Someone I trusted would listen to me, and would always defend the other side. No matter what I said or explained, this person always made me feel like there was something I should have done differently, or that everything was in my head. Despite the fact that I always stuck up for that person and always tried to understand and work through their problems. I should have stopped confiding in this person. I give better advice than they do. I just have zero confidence.