Helping Others To Help Yourself
In particular, the ones I've brought on myself.
I've learned from them - especially thanks to my (oh so patient) girlfriend's advice.
I've talked about those mistakes, and what I've learned from them. Like my Lessons From the Far Side of a Divorce posts (part one, part two), or talking about how we rate pain, the three things that have made (or broken) my relationships, and how we frequently use "think" and "feel" in really unhealthy ways. Not just online, either. I sometimes talk to friends about their issues, with an aim of trying to help.
There's been a surprising side effect.
As I've explained how I've handled situations - both well and poorly - and what I'm doing now, I'm forced to work through my own thoughts, my own assumptions
and it helps me as well.