Hi Sjaykum, tell you what i would recommend is doing something called the five tibetan rites, its a yoga routine which helps you physically, mentally and spiritually, i have also suffered from the problems you talk off, extreme anger and wanting revenge on those who i perceived had wronged me in someway or another, and i was constantly plotting my revenges, but doing the rites has really let me let go of a lot of this anger, give it a go i reckon you'll like it, its easy and only takes 10 mins or so and the benefits extend themselves to all aspects of your life!!!!!!
heres some links for you to get you started
http://www.thepdi.com/five_rites_of_rejuvenation.htm http://www.lifeevents.org/5-tibetans-energy-rejuvenation-exercises.htm 
