Jeff Atwood, blogger and coder over at Coding Horror, one of the many blogs I read, had this post up sometime last year, and I thought it was such a good post that I've recommended it to a couple friends, but I realized I never actually blogged it.
Jeff discusses a similar topic to what I've discussed in the past. Checking email less often, shutting your email off for periods of time, turn off the "new message" ding. All great points.
Go check out his post here. Jeff, great job!