Memory problems, cognitive, depressed.

I have trouble trying to remember anything. I can't remember the names of the person I just met, I even try to ask him/her several times and practice it. I don't have memories of my childhood, what I did 5 years ago or whatever.iy has affected my education life too.I can remember something for a short period of time but in the long run it's totally gone. I'm very Moody also. I'm extremely happy sometimes or sad. Angry for no reason. I feel depressed and disappointed often and I just like to be alone and talk to myself. I get angry when someone disturbs me in my alone time. I have a hard time trying to sleep. It takes me hours before I can get sleep. And I don't get enough sleep for the next day. Meditation didn't work. My instructor gave up on me. The voice in my head keeps running on. I feel like different person when I'm in a good mood, confident, social, logical. But sometimes though I am happy, I have none of those qualities and I'm very negative and I hate people around me.