Inc.: Dale Carnegie Kept a ‘Damned Fool Things I Have Done’ Folder to Track His Worst Regrets. Modern Psychology Says You Should Too
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Inc.: Dale Carnegie Kept a ‘Damned Fool Things I Have Done’ Folder to Track His Worst Regrets. Modern Psychology Says You Should Too
Captured 2026-08-20 from Inc.. The archived copy is preserved so this citation survives link rot.