Why willpower alone doesn’t work

Why willpower alone doesn’t work

May 4, 2026 · 25 min

About this episode

The episode discusses the limitations of willpower and the effectiveness of commitment devices in achieving goals.

Three thousand years ago, Odysseus tied himself to a mast to resist the Sirens. He didn't trust his willpower, so he removed the choice entirely. Today, Owain Service, co-founder of the Behavioural Insights Team and CEO at CogCo, calls that a commitment device. And modern evidence shows it works for everything from saving money to staying married. --- Owain’s book: https://amzn.to/4smVtrP Owain’s company CogCo: https://cogco.co/ Unlock the Nudge Vaults: ⁠https://www.nudgepodcast.com/vaults⁠ Join 11,626 readers of my newsletter: ⁠https://www.nudgepodcast.com/mailing-list ⁠ Connect on LinkedIn: ⁠https://www.linkedin.com/in/phill-agnew/⁠ --- Today’s sources: Asch, S. E. (1951). Effects of group pressure upon the modification and distortion of judgment. In H. Guetzkow (Ed.), Groups, leadership and men (pp. 177–190). Carnegie Press. Ashraf, N., Karlan, D., & Yin, W. (2006). Tying Odysseus to the mast: Evidence from a commitment savings product in the Philippines. Quarterly Journal of Economics, 121(2), 635–672. Behavioural Insights Team. (2013). New BIT trial results: helping people back into work. https://www.bi.team/blogs/new-bit-trial-results-helping-people-back-into-work/…

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