This is probably my worst error as well, one that I've kept repeating for over 20 years. Making the effort to maintain professional relationships over time, esp

This is probably my worst error as well, one that I've kept repeating for over 20 years. Making the effort to maintain professional relationships over time, especially when inconvenient, is the number one piece of advice I'd pass on to anyone new to any field. Sending a "how's it going" e-mail every so often cost nothing. It's the one thing I've emphasized to my own kids repeatedly. Hopefully they'll do better at it than I did.