I cold have the best day ever and I still feel like I'm in a way.

Ana
I can have the best day ever and all of the sudden I feel like I'm in the way and I start to think why I'm I even here if I'm not worth it and I'm just there because I have to be. I feel like people are looking at me and not seeing anybody, as if I have some kind of disease and don't want to be next to me and talk to me. I get feelings and thoughts like this every day but some days I don't want to talk to anyone or get out of bed. I just want to be alone. 
I don't have many friends because I distance myself from everyone because I was bullied from age 6 to 16 and I just closed myself off and I only leave my house to go to school and to workout and I go for coffee with my mom. If I didn't have this I would stay at home all day. 
I'm almost 20 and I don't know how to act in public because of that. I seem mean but I'm not  I just don't trust people. 
When I start a conversation or want to be a part of one I get talked over every time so I just stay quiet and close myself off. I don't know what to do because I want to have friends and I want to feel like I'm worth it but I just can't.