I hate my life

I don't know how to start this off...

I live alone and don't make friends easily even though I'm desperate for the human interaction. I have one good friend who I talk to online daily...everyone else seems too busy or I just feel like I'm worthless.

I'm at uni and feel like it's pointless because I don't think I'll ever get a job because my self esteem is so low...and anxiety and depression have ruined any chance of getting anywhere in life. I have a cat who has cancer and probably won't be with me for much longer and I don't know what to do...I have tried to find support groups for grief and to just to make friends, with no luck. I don't know what I did to deserve this...

I have a psychologist and just recently started seeing a uni counsellor, but being single/living alone/having few friends is really getting me down, and my cat's condition is killing me, he's my everything.