Wow, I consider it an honor to have NYsurvivor stopping by. Really.
I guess I've naturally and sloooooowly been doing what you are suggesting. As time goes by it's easier to switch from thinking "I wonder if W is at OM's place tonight" to "I think I'll call "friend X" and "friend Y" to see if they want to go golfing this weekend". I've never been a planner. I'm slowly starting to develope the habit of making plans.
I've slopped into being the coach for D9's YMCA soccer team. I don't know diddly about soccer so it's forced me to concentrate on learning and planning for that. It's nerve-racking sometimes because I don't want let those girls down or their parents. It's not super competitive and the world won't end if we don't win, but I don't want to look like a total unorganized fool out there either. I want the girls to learn and have fun. It's nice to dwell on something different other than my crappy M. So you are right - filling my life with other positive constructive stuff keeps my mind occupied and away from thinking up new ways to be angry.
I've also started seeing a MC on my own. I've only had two sessions and so far it feels nice to vent to someone face to face. We will be working on my anger and frustration in the near future.