Years ago, a friend sent me a drawing by artist Brian Andreas with a quote sketched into it: “Most people don’t know that there are angels whose only job is to make sure you don’t get too comfortable and fall asleep and miss your life.” Since the publication of the first edition of The Mentor’s Guide, these words have resonated in my ears, and a few more angels have been added. I dedicate this edition to my “angels,” Ed, Bruce, Lisa, David, Talia, Emily, and Lory, whom I can always count on to make sure I don’t get too comfortable, fall asleep, and miss my life.