---
title: "Meaning & Key Takeaway of: Once you know a habit exists, you have…"
description: "\"“Once you know a habit exists, you have the responsibility to change it . . . others have done so . . . That, in some ways, is the point of this book. ..."
image: "https://sms4smile.com/quotes/i/a16/charles-duhigg-1088_books_once-you-know-a-habit-exists-you-have-th_2922082.png"
---

#  Once you know a habit exists, you have the responsibility…

![“Once you know a habit exists, you have the responsibility to change it . . . others have done so . . . That, in some ways, is the point of this book. Perhaps a sleep-walking murderer can plausibly argue that he wasn’t aware of his habit, and so he doesn’t bear responsibility for his crime, but…” quote by Charles Duhigg](https://sms4smile.com/quotes/i/a16/charles-duhigg-1088_books_once-you-know-a-habit-exists-you-have-th_2922082.png)   [Download](https://sms4smile.com/quotes/i/a16/charles-duhigg-1088_books_once-you-know-a-habit-exists-you-have-th_2922082.png) [Open image](https://sms4smile.com/quotes/i/a16/charles-duhigg-1088_books_once-you-know-a-habit-exists-you-have-th_2922082.png)

> ““Once you know a habit exists, you have the responsibility to change it . . . others have done so . . . That, in some ways, is the point of this book. Perhaps a sleep-walking murderer can plausibly argue that he wasn’t aware of his habit, and so he doesn’t bear responsibility for his crime, but almost all of the other patterns that exist in most people’s lives — how we eat and sleep and talk to our kids, how we unthinkingly spend our time, attention and money — those are habits that we know exist. And once you understand that habits can change, you have the freedom and the responsibility to remake them. Once you understand that habits can be rebuilt, the power of habit becomes easier to grasp and the only option left is to get to work.””

[Charles Duhigg](https://sms4smile.com/quotes/author/charles-duhigg/)

## About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

Recognizing a habit gives you both the freedom and duty to reshape it, because habits are conscious patterns we can alter.

**In simple terms:** Knowing a habit exists lets you change it.

Key Takeaway

Take responsibility and act to remodel habits.

Themes

responsibility self‑improvement behavior change freedom

Mood

motivational reflective

Type

advice inspirational

When to use this quote

- parenting
- diet
- sleep
- financial spending
- time management

Key Concepts

habit loop cue‑routine‑reward neuroplasticity self‑efficacy

Questions to Reflect On

- What habit are you avoiding changing?
- How can you create a cue to start a new routine?

A Different Perspective

Habits are often deeply ingrained, making change difficult without support or strategy.

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[Books](https://sms4smile.com/quotes/about/books/) [Habit](https://sms4smile.com/quotes/about/habit/) [Habits](https://sms4smile.com/quotes/about/habits/) [Money](https://sms4smile.com/quotes/about/money/)

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