Now that I've finally figured out my HRM situation, I headed out on a long run tonight. Planned for 10/11 miles, but I also wanted to try and keep my heart rate around 150 bpm per Maffetone's 180-age method. I used to run all my runs slow, and then as the paces crept up I just never really thought about how hard I was working.
I make a conscious effort now to run my long runs slower, and my intervals harder in my speedwork. I'm reluctant to use the 150bpm guideline for all of my runs... But I may try to do it more. It is a big battle with the ego over dealing with the slower average times, even though I can plainly state that I don't really think any less of myself for running slower.