Whether in business or combat, the most effective leaders focus first on the commitment to the mission. They never have the plan up front, which is highly counter-intuitive. They focus first on commitment. Unless you're completely committed, you cannot solve for anything.
The value of flexibility in planning. Everything changes the moment you execute. The most well thought out, well rehearsed plan only survives the first shots fired, the first change in market conditions.
Everything is about the basics. There is no such thing as advanced, only mastery of the basics.
True mastery exists in keeping your word. There are myriad reasons why you don't keep your word. There will always be reasons why people quit.
We drive our own limitations. Nothing else. Nobody else.