I'm honestly not sure what forum this would go under, since it's a lot of issues that are all intertwined; plus, I have no idea what's wrong with me, so there's another problem.

Well, here goes... around a year and a half ago, I started noticing this other "person" in my head who seemed to have her own separate sentience. The two of us would talk, and though part of me knew it wasn't normal, the other was absolutely convinced that she was real. I'm not entirely sure if I genuinely thought that though, or if I just tried to convince myself she was because she was a better friend than any of my real ones. However, while she did seem to care about me, she had a cruel sense of humor, was more often than not criticizing my actions, and had a short temper that would eventually make me blow up at people for little to no reason, while I'm generally a docile person who dislikes anger and fighting. Eventually it got to be too much for me, and while she helped me a lot with my confidence and criticized me enough for me to change myself into someone I genuinely liked, I wanted her to go away.

So, I kinda did something stupid; I deliberately created another one. This one, being my own creation entirely, was essentially the exact opposite of the first. She was both meant to be a balance and someone for me to confide in I guess, as I didn't really trust anyone at the time. This just caused a ridiculous amount of stress with two other voices jabbering in my head, and after a while I tried to get rid of them, but I couldn't figure out how. At this point, I was still entirely convinced that they were beings in their own right.

However, shortly after this, I met someone whom I quickly became close friends with; being the first person my age I'd had much interaction with in a long time, I started to realize that this wasn't normal at all and I probably needed to get help. However, after I started to convince myself that they were just in my imagination, they started to go away. I assumed that it would all get brighter from there.

Instead, my mind found another way to make me miserable. Prior to this, I was just shy; recently, I've been getting more and more terrified of people, to the point where the only person I willingly talk to is the same close friend from before. I haven't told anyone about this, because I'm afraid they'll question and judge me, which will then likely lead to therapy and thus more terror. As to why I'm so afraid of people? I'm not quite sure. I'd say it's Social Anxiety or something of the sort, but I can talk in front of a large group of people without hesitation, never get embarrassed, and I'm not afraid of being judged besides the idea of being labeled as "crazy", due to the consequences of such a label. At this point though, I've found it's a somewhat irrational fear that everyone is going to hurt me - not on purpose, but I'm generally a very caring person and get upset when others don't care as much about me.

I've also been experiencing another two issues; the first is that I've been witnessing a decline in my emotions over the past year or so, save for fear. I'll get occasional spurts of other emotions now and then, and it's getting better, but it still bugs me as I used to be a highly emotional person. Second, I can never seem to let myself be happy; it's a fear of being crushed to the ground again. For example, earlier today I asked somebody to do me a favor, and when they accepted, I quickly took it back and begged them NOT to do it, even though it would have made my life a lot easier if they had. I think part of it was that I'm not used to hearing "yes" as an answer; whenever I do, I freak out because I'm not sure how to handle the situation as simple as it may seem.

tl;dr, I need help, but I'm so terrified of it that getting it will only make me worse. What am I supposed to do? Also, does anyone have an idea of what's wrong with me?

Sorry for the wall of text...