Spend 90% of Your Time Teaching

13 Aug 2025 · 1 min
0:40

A leadership maxim says leaders should spend 90% of their time teaching, attributed to Costco's Jim Sinegal and Luxottica's Leonardo Del Vecchio. But some leaders like Mark Zuckerberg are more hands-on, doing the work themselves rather than teaching. The real point: effective leadership requires involvement, whether through mentoring or direct execution.

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