# Good Habits, Bad Habits *Good Habits, Bad Habits: The Science of Making Positive Changes That Stick* (2019) is a book by [[Wendy Wood]], one of the world's leading habit researchers. Drawing on 30 years of scientific research, Wood argues that willpower and motivation are overrated—habits, which account for 43% of daily behavior, operate through [[Automaticity]] rather than conscious choice. The key insight: successful behavior change requires designing contexts that trigger desired behaviors automatically, not relying on self-control that depletes throughout the day. Wood's framework centers on three forces that drive habits: **context** (environmental cues), **repetition** (building neural pathways), and **reward** (reinforcing the behavior). She contrasts this with [[Roy Baumeister]]'s ego depletion model, arguing that habits bypass willpower entirely—once formed, they execute without conscious effort. The book provides practical strategies for [[Environment Design]]: reducing friction for good habits, adding friction for bad ones, and leveraging "habit discontinuities" (life changes that disrupt existing patterns). Wood's research-backed approach complements [[BJ Fogg]]'s [[Tiny Habits]] and [[James Clear]]'s [[Atomic Habits]]. ## Core Framework ``` ┌─────────────────────────────────────────────────────────────┐ │ WENDY WOOD'S HABIT MODEL │ ├─────────────────────────────────────────────────────────────┤ │ │ │ THREE FORCES OF HABIT │ │ │ │ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ │ │ │ CONTEXT │ │ REPETITION │ │ REWARD │ │ │ │ │ │ │ │ │ │ │ │ Environment │ │ Practice │ │ Reinforces │ │ │ │ triggers │ │ builds │ │ the loop │ │ │ │ behavior │ │ automaticity│ │ │ │ │ └──────┬──────┘ └──────┬──────┘ └──────┬──────┘ │ │ │ │ │ │ │ └────────────────┼────────────────┘ │ │ ▼ │ │ ┌─────────────────┐ │ │ │ AUTOMATICITY │ │ │ │ │ │ │ │ Behavior fires │ │ │ │ without thought │ │ │ │ (no willpower) │ │ │ └─────────────────┘ │ │ │ │ 43% of daily behaviors are habitual │ │ │ └─────────────────────────────────────────────────────────────┘ ``` ## Key Ideas | Concept | Description | |---------|-------------| | **43% habitual** | Nearly half of daily actions are automatic | | **Context is king** | Same behavior, new context = no habit | | **Friction matters** | Small barriers have outsized effects | | **Willpower is limited** | Can't sustain behavior change | | **Habits bypass willpower** | Once formed, no effort needed | | **Habit discontinuity** | Life changes break old habits | | **Reward timing** | Immediate rewards build habits | ## Willpower vs Habits | Willpower Approach | Habit Approach | |-------------------|----------------| | Relies on motivation | Relies on context | | Depletes throughout day | Consistent execution | | Requires conscious effort | Automatic | | Often fails long-term | Sustainable | | Fights against impulses | Works with brain | ## Friction Strategies | To Build Good Habits | To Break Bad Habits | |---------------------|---------------------| | Put running shoes by bed | Move snacks to high shelf | | Pre-pack gym bag | Delete apps from phone | | Set out vitamins visibly | Use website blockers | | Keep fruit on counter | Leave wallet at home | | Reduce steps to start | Add steps/delays | ## Habit Discontinuity | Life Change | Opportunity | |-------------|-------------| | **Moving** | New commute, new gym, new routines | | **New job** | New schedule, new environment | | **Having children** | Complete routine restructure | | **Retirement** | Rebuild daily structure | | **Pandemic/crisis** | Forced habit disruption | ## Chapter Themes | Part | Theme | |------|-------| | **Part 1** | How habits work (automaticity, context) | | **Part 2** | Forces that create habits | | **Part 3** | Why habits stick or fail | | **Part 4** | Breaking bad habits | | **Part 5** | Making habits work for you | ## Research Findings Cited | Finding | Source | |---------|--------| | **43% habitual behavior** | Wood et al. | | **66-day average formation** | [[Phillippa Lally]] | | **Context transfer failure** | Wood lab research | | **Friction effects** | Multiple studies | | **Ego depletion debate** | [[Roy Baumeister]] critique | ## Comparison with Other Habit Books | Book | Focus | |------|-------| | **Good Habits, Bad Habits** | Scientific research, context/friction | | **[[Atomic Habits]]** | Systems, identity, 1% improvements | | **[[Tiny Habits]]** | Behavior design, celebration | | **[[The Power of Habit]]** | Habit loop, keystone habits | | **Willpower** | Self-control as resource | ## Practical Takeaways | Takeaway | Application | |----------|-------------| | **Design your environment** | Make good choices the easy default | | **Stack with existing habits** | Attach new to established routines | | **Use transitions** | Leverage life changes to reset | | **Make it easy** | Reduce friction ruthlessly | | **Be patient** | Average 66 days, up to 254 | | **Intrinsic rewards** | Find pleasure in the behavior itself | ## References - Wood, Wendy. *Good Habits, Bad Habits* (2019) - https://www.goodhabits-badhabits.com/ ## Related - [[Wendy Wood]] - [[Habit Formation]] - [[Automaticity]] - [[Environment Design]] - [[Friction]] - [[Phillippa Lally]] - [[Roy Baumeister]] - [[Decision fatigue]] - [[BJ Fogg]] - [[Tiny Habits]] - [[Atomic Habits]] - [[James Clear]] - [[Behavior Change]]