In thoughtful disagreement, both parties are motivated by the genuine fear of missing important perspectives. Exchanges in which you really see what … - Ray Dalio

In thoughtful disagreement, both parties are motivated by the genuine fear of missing important perspectives. Exchanges in which you really see what the other person is seeing and they really see what you are seeing — with both your “higher-level yous” trying to get to the truth — are immensely helpful and a giant source of untapped potential.

The pain of problems is a call to find solutions rather than a reason for unhappiness and inaction, so it's silly, pointless, and harmful to be upset at the problems and choices that come at you (though it’s understandable).

Every leader must decide between 1) getting rid of liked but incapable people to achieve their goals and 2) keeping the nice but incapable people and not achieving their goals. Whether or not you can make these hard decisions is the strongest determinant of your own success

From very early on, whenever I took a position in the markets, I wrote down the criteria I used to make my decision. Then, when I closed out a trade, I could reflect on how well these criteria had worked. It occurred to me that if I wrote those criteria into formulas (now more fashionably called algorithms) and then ran historical data through them, I could test how well my rules would have worked in the past. Here’s how it worked in practice: I would start out with my intuitions as I always did, but I would express them logically, as decision-making criteria, and capture them in a systematic way, creating a mental map of what I would do in each particular situation. Then I would run historical data through the systems to see how my decision would have performed in the past and, depending upon the results, modify the decision rules appropriately.