Leadership habits that sustain strength training
Experienced leaders can either expand other people’s capability or unintentionally make every decision depend on themselves. Wiseman contrasts Multipliers, who attract talent, create space, debate rigorously, and invest ownership, with Diminishers who drain intelligence despite good intentions. Strength training works as a metaphor rather than the book’s topic: capacity grows when people are challenged, trusted, and allowed to carry meaningful weight. As midlife reshapes familiar assumptions, the framework can reduce overfunctioning at work. Leadership is not proving that one person is smartest; it is designing conditions in which colleagues think, contribute, recover from mistakes, and become less dependent on constant rescue.
About Liz Wiseman
Liz Wiseman joined Oracle straight from business school as a technical trainer despite barely understanding the company or how to teach engineers. Seventeen years inside the organization later gave her a close view of leaders who amplified—or diminished—other people’s intelligence.
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