Took me many years, but I have finally learned to articulate my First Commandment.
Don’t participate in something (anything) unless you can make a real contribution.
All through my school years I was focused on soaking up knowledge and, of course, on using that knowledge to get things done. But I also spent a lot of time going to events where I was listening rather than really interacting and learning. Soon after that, as a young faculty member at Northwestern University, I started a research project and began helping other professors and graduate students learn how to use computers in teaching. Converting “learning” into “action” is what got me that faculty position, and what has worked for me ever since.