
Book · Non-fiction, memoir and self-help
10% happier : how I tamed the voice in my head, reduced stress without losing my edge, and found self-help that actually works : a true story
by Dan Harris
Page count, estimated reading time and reading quiz: everything to know before you start 10% happier : how I tamed the voice in my head, reduced stress without losing my edge, and found self-help that actually works : a true story, and the Vread challenge to get to the end.
- Pages
- 256
- Reading time
- ≈ 4 h 40 min
- Checkpoints
- 9
- Genre
- Non-fiction
Free on iPhone and Android.
How long does it take to read 10% happier : how I tamed the voice in my head, reduced stress without losing my edge, and found self-help that actually works : a true story?
At 256 pages, 10% happier : how I tamed the voice in my head, reduced stress without losing my edge, and found self-help that actually works : a true story is a medium-length book. Expect about 4 hours 40 minutes of reading to finish it, based on 250 words per page and an average reading speed of 230 words per minute. A fast reader will go quicker; a careful read (or reading in a second language) will take longer.
At 30 minutes a day, that is about 10 days of reading. At the median pace of Vread readers, 72 pages per reading day, it takes 4 reading days. For a book of this length (250 to 399 pages), Vread readers who finish it take a median of 4.7 days between the first and the last checkpoint (Vread Reading Barometer 2026).
- 30 minutes a day10 days
- Vread median pace (72 pp./day)4 days
Estimates; see the method at the bottom of the page.
Prove you read it
The Vread challenge: 9 checkpoints
- Checkpoint 1, page 28
- Checkpoint 2, page 57
- Checkpoint 3, page 85
- Checkpoint 4, page 114
- Checkpoint 5, page 142
- Checkpoint 6, page 171
- Checkpoint 7, page 199
- Checkpoint 8, page 228
- Checkpoint 9, page 256
In Vread, 10% happier : how I tamed the voice in my head, reduced stress without losing my edge, and found self-help that actually works : a true story is split into 9 checkpoints, one every 28 pages or so. At each checkpoint, a question covers the passage you have just read: a correct answer validates the step, and your progress moves forward like a training plan.
The challenge: validate all 9 checkpoints through to the last page. No giant quiz at the end, no summary to copy out: short questions along the way that prove the book was actually read. It also works as a reading quiz to check your understanding before a test.
Also available in French on Vread.
Illustrative example
What a checkpoint looks like
A short, precise question about the pages you have just read: a character, a place, a choice.
The answer is in the text: reply in the app.

This is not a question from 10% happier : how I tamed the voice in my head, reduced stress without losing my edge, and found self-help that actually works : a true story: to avoid spoilers, the real questions stay in the app.
Answer in the app, one checkpoint at a time.
Summary, quiz, reviews: frequently asked questions
How many pages is 10% happier : how I tamed the voice in my head, reduced stress without losing my edge, and found self-help that actually works : a true story?
How long does it take to read 10% happier : how I tamed the voice in my head, reduced stress without losing my edge, and found self-help that actually works : a true story?
Is there a quiz on 10% happier : how I tamed the voice in my head, reduced stress without losing my edge, and found self-help that actually works : a true story?
Where can I find a summary of 10% happier : how I tamed the voice in my head, reduced stress without losing my edge, and found self-help that actually works : a true story?
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Read 10% happier : how I tamed the voice in my head, reduced stress without losing my edge, and found self-help that actually works : a true story with Vread
Add the book to your library, read at your own pace in whatever format you use, and validate each checkpoint. Vread is free on iPhone and Android.
Take the challenge