Parent issues, job issue, pet issue.

He lives with his dad but his mom & dad both takes care of him self. But he's not happy with this separation of his parents. He has a pug last year he died. But some how he feels guilty for his death. 6months ago he joined wipro. But he wasn't satisfied with the job, location. So when I feel any prob with him he used to say that you don't understand me you only concern about yourself I can't deal with your issues I have already my previous issues etc. He blames others but when it comes to him like if i say you are doing this wrong he gets hyper he Can’t accept his mistakes. He gets hyper anxious takes some medicine to come down and sleeps for 2/3 days. Please help me out with this. I want to help him anyway .