Developing anger issue ?

I believe im developing an anger issue...and its only getting worse. Probably from the amount of stress building up from work and home and the non existant sleep. I have been trying my hardest to cope with everything..but nothing is helping. I have no money..and my job is giving me a pathetic whopping 20 hours a week. How am I supposed to live off that? And whats even more pathetic…is im still living at home with my rents! as far as job searching goes? No luck! I have no one to help me financially..im on my own. My friends are non supportive..and only make me feel like sh*t when I cant attend fun activities that cost money..which I desperately want to do. Now i think they consider me as just a "whiney brat" When alls i really needs is just some help. I dont know what to do! I cant seem to catch a break. And it seems that all the years I have been suffering and just shrugging everything off is catching up to me. Im so hateful now. I used to be so sweet and helping and caring. Now..im snappy and bitter. I know everyone is noticing it..and i just wanna disappear because im ashamed of myself. My patience is non exsistent! I have yelled, screamed, and thrown objects out of anger! I have scared my one year old pup so bad that he p***ed himself! I dont want to hurt anyone or break anyones valuables..but nothing seems to ease my anger. Im such an angry person now..that it makes me wanna cry all the time because i never wanted to be like this...but i cant help it. It feels like theres is a ton of bricks sitting on my chest. I know I need help…but the little health insurance I have..doesn’t cover mental health. Go figure. What do I do…before I hurt someone or myself? Am I really honestly better off in a mental home?…cuz right now…that sounds like the dream resort.