I must say i think Tweeeby nailed it...but also i feel you mate, i also had problems when allowed external things to effect my life more than me myself. Now i focus on my work , on my passion which is reading and understanding the meaning of life, but also i like to have fun , sarge now or then and see if i could find a soul mate.
I suggest taking a few days to calm down. Do something you have never done before...that's at least what i do when i feel empty or depressed... i strongly suggest 2 books that may help you find your peace :
1)
The four agreements- Don Miguel Ruiz (i think you have 2/4 which is a really good thing...i still can't get at least 1 of 4 but i am trying to become better every day

2)
The Dreamseller -Augusto Cury ...masterpiece of a book ...you will be stunned after reading first few pages...it will not give you answers to your problems but help you by asking the right questions which will help you find your way

Hope i helped a little , cheers
I