Please tell me what this is?

I am constantly under an identity crisis. First I want to major in one thing then I want to major in something else, then I want to join the military, then I feel extremely confident, then I feel depressed and hate my life and feel bored with everything. I don't have barely any friends. I don't trust a lot of people. My mood changes a lot. It's like a constant identity crisis. I want a girlfriend but don't want people talking about us or thinking about us. I want to be independent but then I feel like my family is a lifeline. I thought I have Botderline Personality Disorder but I do not think in black and white. I also think I have OCD because I get thoughts that if I don't do something I'm going to die. I think I actually have multiple issues undiagnosed. I also have panic attacks lately.