In scaling companies, jobs are like piles of Legos. Once you build a tower (master a role), you must give it to someone else and move on to a bigger, messier pile. Holding onto your old role buries you; giving it away allows you to tackle bigger challenges (building cities instead of houses).

"If you really want to take advantage, both learning to give away what you've gotten good at and move on to the next shiny pile of Legos."

Imagine a team as a boat. Problems below the waterline sink the boat. Leaders often dive deep (scuba) to fix 'people problems' first, but they should snorkel first. Start at the surface with structural issues (goals/roles) before addressing interpersonal dynamics.

"Your only goal as a manager, if you do nothing else, is clear roles and clear expectations."

Goals are communication tools, not just lists. Effective goals must be simple, painful to select, and rigorously owned to actually drive business outcomes.

"Strategy should hurt. If your goal setting process is not painful, then you're not prioritizing heavily enough."

Most people view careers as stairs (linear promotions). However, high-growth careers are J-Curves: you jump off a cliff (take a risk), fall/struggle for 6-9 months (the bottom of the J), and then shoot up exponentially higher than the stairs would have taken you.

"The much more fun careers are like jumping off cliffs and you do fall, but then you climb out way beyond where the stairs could ever get you."