In spring 2017, I went in for a routine physical and heard the words that no guy wants to hear: “You have late-stage aggressive prostate cancer, and we are concerned that it has spread.”

Up until that moment, I had been busy doing life, going to work and spending time with my family. I was overwhelmed with questions: How will this impact my family? How will this impact my career? And then I was suddenly worried I had missed my...