10% Happier with Dan Harris
10% Happier with Dan Harris

The Science of Making — and Keeping — New Year's Resolutions | Hal Hershfield

New episodes come out every Monday, Wednesday, and Friday for free, with 1-week early access for Wondery+ subscribers. ---- A leading behavioral psychologist reveals practical strategies to help you actually make the changes you want to make this new year (and beyond). Hal Hershfield is a professor

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Hal Hirschfeld Guest

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Episode Summary

Executive Summary: Dan Harris and UCLA professor Hal Hirschfeld unpack why New Year’s resolutions fail and how to make behavior change more likely: connect with your future self, make goals vivid and emotionally real, use commitment devices, and shrink big goals into manageable, consistent steps. The conversation blends research-backed tactics with a caution not to sacrifice the present entirely.

Main Topics: Fresh starts and why New Year’s matters: Hirschfeld explains the 'fresh start effect'—arbitrary calendar breaks like New Year’s, Mondays, birthdays, or new quarters can motivate people to reattempt goals because they feel like a clean slate. Future self and mental time travel: The core framework is that people act more wisely when they feel connected to their future selves; mental time travel makes the future more concrete and helps align current choices with long-term intentions. Why resolutions fail and how to design better goals: Resolutions often fail because people return to present bias and set goals that are too vague or rigid; research-backed adjustments like goal ranges and emergency reserves improve follow-through. Commitment devices and self-control: Hirschfeld describes devices such as timed lockboxes and external accountability as ways to constrain impulsive behavior and align the 'planner,' 'doer,' and 'reflector' selves. Make the present easier: Strategies like breaking goals into small units, temptation bundling, and tangential immersion reduce the pain of starting and sustaining difficult behaviors. Multiple selves over time: Rather than one fixed self, people inhabit many selves across roles and time horizons; choosing which future self to prioritize depends on the goal and time frame. Don’t over-sacrifice the present: Hirschfeld and Harris emphasize that present enjoyment, relationships, and memories can also serve the future; behavior change should not become a blanket mandate to delay living.

Key Arguments: Behavior change is possible, but only when goals are designed to fit human psychology rather than idealized self-control. People naturally devalue the future, so interventions should make future outcomes vivid, emotional, and concrete. A 'fresh start' can increase motivation because it psychologically resets identity and expectations, even though the calendar itself is arbitrary. Flexibility helps, but the right kind matters: ranges, buffers, and consistency outperform vague intentions or all-or-nothing perfectionism. Commitment devices work because they reduce the gap between what the planner wants and what the doer does, especially when they include real costs for failure. Smaller, framed steps can dramatically improve uptake because they make action feel easier now, even if the total goal is unchanged. Future-oriented behavior is not always about sacrifice; some present actions improve both current well-being and future outcomes, especially relationships and shared experiences. The healthiest approach balances future planning with present engagement instead of treating the present as something to be endlessly postponed.

Data Points: Resolution failure rate: Most people bail on resolutions by February - Dan Harris frames the problem at the start of the episode to motivate practical advice Emergency reserves example: 7 days a week + 2 emergency reserve days - Marissa Sharif’s research example showing that building in buffers can outperform a simpler '5 days a week' framing Goal range example: 1 to 5 days per week - Illustration of how ranges preserve momentum at both the high and low end of adherence Savings sign-up rate: 30% - Acorns experiment when savings was framed as $5 a day Savings sign-up rate: 7% - Acorns experiment when savings was framed as $150 a month Behavioral lift: 16% more likely - Mexico bank study where customers shown age-progressed images were more likely to contribute to retirement accounts Study sample size: 50,000 customers - Bank intervention in Mexico testing age-progressed future-self imagery Volunteering framing: 4 hours a week - Referenced example that smaller, more concrete units increase willingness to commit to volunteering Timing device duration: 1 to 2 hours - Hirschfeld describes using a K-Safe to lock away his phone during dinner time

Pivotal Quotes: "You are actually a we." — Hal Hirschfeld: Explaining his view that identity contains multiple selves across roles and time horizons "The way that we see ourselves and how connected we see ourselves to the person we will one day become, that has an impact on the decisions that we make right now." — Hal Hirschfeld: Summarizing the central idea behind future-self research "Make the present easier." — Hal Hirschfeld: A compact framing for strategies that reduce friction and make goal pursuit more doable

Implications: Listeners should focus less on willpower and more on design: make goals vivid, small, specific, and buffered. For behavior-change fields, the episode reinforces that well-timed, low-friction interventions can outperform motivation alone.

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