anger management

Hey guys right now I'm going through a very very hard time I'm going through a controlling and abusive relationship and I recently lost both my aunt and my grandma within 2 days of eachother and I just feel so angry I don't know why and I can't really pinpoint my anger at a specific event or anything  but last Night I almost punched my wall for no reason and my friends have been saying I need therapy but It's very hard to meet ends lately and I don't have any money to spare and non of my friends are really the kind of people I can talk about personal issues with I don't know how to handle my anger but I feel l need to get a handle on it before it becomes self destructive does anyone have any advice for me ?