This book had several pointers that were helpful. The most important theme was: our decisions are many times separate from the outcomes. A good decision could still result in a bad outcome, which doesn't make the decision bad.
Before you make a decision, ask yourself how you will feel in 10 minutes, 10 months, and 10 years if you made it.
In several places, the book felt stretched and repeated the same pointers without adding anything, but I blame how the literary industry is, because no one rewards you for writing an essay, you get royalties for writing books instead.
Also, it got repeated in the book so many times that by now, I feel really bad for the guy who questioned his decision-making after firing that VP.