When I was a sophomore in high school, I wrote a report in biology titled, “The Positives of Positive Thinking.” I’d chosen the subject because I was, to put it mildly, not science-minded. I remember that the research and writing was an agonizing process, but I found myself intrigued by the data around the impact of optimism. From my earliest memories, people had always noted my positive nature and ready smile. While I certainly have moments of sadness and anger, I don’t think I’d be exaggerating if I said I have a smile on my face most of the time. I’m just wired that way.

I got an A on that biology paper, and I still remember the comment that my teacher wrote on the top of the first page: “I don’t know if this is BS, but if you can keep this thought process, it will serve you well.”As I reflect on the power that positive thinking has played in my life since—personally and professionally—I can say unequivocally that she was right.