How many of your life’s ten biggest decisions have you already made?

My guest today, behavioral scientist Dr. Adrian Camilleri, would often ask this question to friends and family, and found that it generated a lot of interesting conversation. It also generated a lot of his own thoughts, which made him want to dive more deeply into it and empirically study it and other related questions as well.

The result was the Biggest Life Decisions Project, which we'll be talking about on the show today. Adrian first explains the criteria that define a big life decision, the most common ones people make, and which of these decisions people rank as being the most important. We then talk about the numbers and types of big life decisions people typically make in each decade of their lives, and how these decisions tend to be front-loaded in your twenties, but you'll still have a surprising number to make in your later years, too. Adrian shares which decisions people tend to look back on positively and are correlated with higher life satisfaction, and which tend to lead to poor outcomes and regret. We also get into the way people can both underestimate and overestimate the importance of some decisions, before ending with what Adrian has learned by working on this project about how to make good life decisions.