I applaud the general concept here but I think you're doing yourself a disservice if this is the extent to which you take this. Go take up rock climbing (toproping in a gym doesn't count), whitewater kayaking, or some other activity that will get you outdoors doing something involving real risk assessment and nontrivial consequences.

If you're anything like me you'll find your attention to detail increases dramatically. Your ability to shrug off daily stresses will also increase. Compared to being gripped out of your mind 120 feet off the ground it's pretty hard to take some guy cutting you off in traffic seriously.

Whatever you do, keep pushing your boundaries. Good luck!