it's called living, you have managed to cope so far , so you can continue to cope with a lot more, you are a lot stronger than you think.
life was never ment to be easy, when things are tough as they are for you now, that is when you find out what sort of person you realy are, and who your real friends are.
Things will get better in time, the shit you are going through now will in the long run make you a much stronger person and focus your thoughts on what realy matters to you and who you should care for. We have a saying
You can choose your friends but not your family.
The people who stand by you when you need them are the ones you should care for in the future, the ones that don't you should tell them to get to fuck.
It sounds like shit but unfortunatly it is true, we all need crap things to happen to make us stronger and wiser and to appreciate the good times more.
When life is going wrong it gets the things that matter in to perspective.
IT WILL GET BETTER - TAKE CARE MY FRIEND