If you were me...?

I am a anitsocial person who is over slightly over weight. Where I work the people criticize me and I have been bad for business I don’t know if I am going to get fired everyday I wake upo worry I am also trying to get into college. When I first started work I was a laughing stock to everyone even the customers. Now people hardly come here when it’s my shift my employees shun me as I shun them back for their rude remarks behind my back (including my boss)I am worried it will be like this forever. I can’t quite just yet I have bills. This guy I liked here I wanted to make him my friend. He is a ladies man and a great talker. He has been here the longest and makes me feel like crap the most. He use to like me but I am so quiet and fat he now shuns me away. And also has other following his footsteps in shunning me unless I talk about something interesting they shun me. I almost killed myself one night when a customer came in talking about how fat I was... I can’t even with this job idk what to do other than give up which is what everyone is waiting for.