I have been an avid runner for over 15 years.
I have received a lot of valuable advice in that time. The advice has come from running experts, coaches, online research, and fellow runners.
I know what shoes are best for my feet, the value in warming up (and cooling down), and how to pace myself in a race of (almost) any distance. I have learned to run my own race and to opt out of the comparison game. Although I'm still very much a work-in-progress, I'm thankful for all that I've learned.
The most valuable lesson, though, has come from my own experience...and that is to always be grateful.