Really Confused

Since I was really little I always felt like I was never alone. My parents would also worry about me because, I would start crying or freaking out when I would close my eyes because I would be getting a premonition. Also they would worry about me because, at one moment I would be jumping up and down with excitement and then I would be depressed.

Every once in a while I will see somebody and they will look at me then disappear. Also every once in awhile I can definitely tell my moms mood and why she is feeling that way or I can feel pain where she does. I've recently discovered 9 spirits in my house and some of them can change into forms of my family and they will look totally vivid. My cousin and I also share some of the same talents/skills and we play this game of guess the card and I've became pretty good at it. One time I locked myself in my room and my door knob would shake violently and would I would say something it would stop. It did that about 3 times and when I finally opened my door nothing was there and my brother was downstairs. Also after I opened the door it all stopped, except the fact that I could hear my brother calling my nickname and he would always say it wasn't him. Yes I understand that siblings would lie about something like that but after awhile he would admit it was him and he never has. I'm really confused over what I am and I would love to become better at my gift but I'm lost. So if anybody could help me please tell me.