I have become a very angry person lately.

Hi all.

I just don't know what is wrong with me. I have become a very angry person lately.
I try to emotionally hurt all the people close to me, mainly family. Also i have become so aggressive, when i walk around outside, i just want to physically fight with people. My doctor says that i have mild depression. I had a relationship breakdown a year ago, and to be honest im still not over it, its always on my mind.
I eat and sleep well but i don't go out, i spend all my time in my bedroom, either on the computer, reading books, or watching films. Somedays i feel like talking to everyone and somedays i don't want to talk to anyone.
I hate the person i have become.
Should i pack my bags and go on a long holiday? will it help?
I just dont know what to do!

Thank-you for reading