Almost forgot: rest of the plan includes continuing to hit the gym at least 4 days a week, preferably 5.
Another thing I learned about my anger issues in the past was that a lot of it comes from stress not being relieved, and I've experienced first-hand how mental and emotional stress has physical consequences, and how strenuous exercise really lightens that up a lot.
As part of my GAL, I'm thinking of training for a Spartan Run next spring so I have something I'm working toward as opposed to only dealing with things that are out of my control.