What One Piece of Advice Would You Give to an Aspiring Museum Professional?

Lucky me! I'll be teaching the Exhibition Development and Evaluation course at Bank Street College starting in January, and I'd like to tap into the "wisdom of the crowd."

Think back to the start of your museum career --- what do you wish you knew then, that you know now?
 
Leave the best piece(s) of advice that I can share with my class of aspiring museum professionals in the "Comments" section below.

Thanks!