Figure out the hard thing first. Try to solve that as quickly as possible. Beware of false progress. - Annie Duke

It's a shame the social contract for poker players is so different than for the rest of us in this regard because a lot of good can result from someone saying, "Wanna bet?" Offering a wager brings the risk out in the open, making explicit what is already implicit (and frequently overlooked). The more we recognize that we are betting on our beliefs (with our happiness, attention, health, money, time, or some other limited resource), the more we are likely to temper our statements, getting closer to the truth as we acknowledge the risk inherent in what we believe.

In large part, we are what we do, and our identity is closely connected with whatever we're focused on, including our careers, relationships, projects, and hobbies. When we quit any of those things, we have to deal with the prospect of quitting part of our identity. And that is painful.

If you want to pick a role model for designing a group's practical rules of engagement, you can't do better than Merton. To start, he coined the phrase "role model," along with "self-fulfilling prophecy," "reference group," "unintended consequences," and "focus group." He founded the science of sociology and was the first sociologist awarded the National Medal of Science.