galvanize (one) into action
To induce or cause one to start doing something. We'd been trying to ignore the leak in our roof, but that torrential downpour finally galvanized us into action. Oh yeah, I returned those books today—the threat of a hefty library fine is what ultimately galvanized me into action. A: "Wow, you finally cleaned your room." B: "Yep, Mom threatened to ground me, so that galvanized me into action."
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