I have an artist's sketch book next to me when I'm on the computer (most of my day) and use it for everything; taking notes on what I read online, in books/magazines, making lists, phone calls and chores I need to do, and just doodling.
I would approach the anger from the side, as if you are not terribly interested :-) just curious. Make a list of the "usual" suspects; parents, siblings, spouses, bosses, coworkers, teachers, friends, self, etc. and just kind of play with it; who gets the most examples listed under their title and why?
I would look at the anger itself too; it sounds like it is often unfocused? like anxiety can sometimes be. I would check my eating habits (
Watch out for 'food swings' when hunger, anger collide - NBC News.com ) and see if I could improve my physical awareness of myself too.