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  • Grumpy Ninja: A Children’s Book About Self-Care and Gratitude (Ninja Life Hacks 7)
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Grumpy Ninja: A Children’s Book About Self-Care and Gratitude (Ninja Life Hacks 7) Kindle Edition

by Mary Nhin (Author) Format: Kindle Edition
4.6 out of 5 stars 489 ratings
4.4 on Goodreads
81 ratings

鶹

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Grumpy Ninja is the grumpiest ninja ever.

Find out what happens in this comedic book about managing grumpiness.

Life is hard! It's even harder for children who are just trying to figure things out.

The new children's book series, Ninja Life Hacks, was developed to help children learn valuable life skills. Fun, pint-size characters in comedic books easy enough for young readers, yet witty enough for adults.

The Ninja Life Hacks book series is geared to kids 4-10. Perfect for boys, girls, young readers, students in primary school, or toddlers. Excellent resource for counselors, parents, and teachers alike.

Collect all the Ninja Life Hacks books and box sets!

Read more
Previous slide of product details
  1. Reading age
    4 - 10 years
  2. Book 7 of 130
    Ninja Life Hacks
  3. Print length
    35 pages
  4. Language
    English
  5. Accessibility
    Learn more
  6. Publication date
    Dec 5 2019
  7. Page Flip
    Not Enabled
  8. Word Wise
    Not Enabled
  9. Enhanced typesetting
    Not Enabled
  10. ISBN-13
    978-1951056117
Next slide of product details

Shop this series

See full series
There are 130 books in this series.

In this series (130 books)

Kindle Edition

From the Publisher

I am stronger than anger I choose to calm my anger a little spot of perseverance Diane alter
I am stronger than anger I choose to calm my anger a little spot of emotions and feelings
I am stronger than anger I choose to calm my anger a little spot of emotions and feelings
gabi Garcia zones of regulation Diane Alber a little spot series Mary Nhin ninja book series set
Emotions and Feelings Box Set
Growth Mindset Box Set
Leadership Box Set
Mover and Shaker Box Set
Self Management Box Set
Buying Options
Buying Options
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Customer Reviews
4.7 out of 5 stars 2,072
4.8 out of 5 stars 869
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Price $98.53 $106.22 — no data — no data — no data
Comedic, easy readers ✓ ✓ ✓ ✓ ✓
Promotes a growth mindset ✓ ✓ ✓ ✓ ✓
Cultivates self-confidence ✓ ✓ ✓ ✓ ✓
Develops emotional intelligence ✓ ✓ ✓ ✓ ✓

Product details

  • ASIN ‏ : ‎ B082FQ1YS3
  • Publisher ‏ : ‎ Grow Grit Press LLC
  • Accessibility ‏ : ‎ Learn more
  • Publication date ‏ : ‎ Dec 5 2019
  • Language ‏ : ‎ English
  • File size ‏ : ‎ 6.6 MB
  • Simultaneous device usage ‏ : ‎ Unlimited
  • Enhanced typesetting ‏ : ‎ Not Enabled
  • X-Ray ‏ : ‎ Not Enabled
  • Word Wise ‏ : ‎ Not Enabled
  • Print length ‏ : ‎ 35 pages
  • ISBN-13 ‏ : ‎ 978-1951056117
  • Page Flip ‏ : ‎ Not Enabled
  • Book 7 of 130 ‏ : ‎ Ninja Life Hacks
  • Reading age ‏ : ‎ 4 - 10 years
  • 鶹 Rank: #483,381 in Kindle Store (See Top 100 in Kindle Store)
  • Customer Reviews:
    4.6 out of 5 stars 489 ratings

About the author

Follow authors to get new release updates, plus improved recommendations.
Mary Nhin

Mary Nhin

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Full content visible, double tap to read brief content.

Visit ninjalifehacks.tv for fun freebies.

Mary Nhin loves being the guinea pig for all her husband's kitchen creations. She is a mom of three boys, serial entrepreneur, and author. For 20 years, she has been serving families through her companies, Nhinja and Ninja Life Hacks. She has been awarded the Forty under 40 and Inc 5000. Her books have sold over 3 million copies worldwide. Email her at info@ninjalifehacks.tv and follow @officalninjalifehacks on IG/FB/TT/YT.

Customer reviews

4.6 out of 5 stars
489 global ratings

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Top reviews from Canada

  • B. Lavoie
    5.0 out of 5 stars Great lesson here
    Reviewed in Canada on December 8, 2019
    Verified Purchase
    This cute, colourful book teaches a good lesson about our perspective. How we view life directly affects us. Stay Positive and be Grateful!
    Helpful
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  • Michel G
    5.0 out of 5 stars explain feelings in a simple easy way.
    Reviewed in Canada on September 17, 2021
    Verified Purchase
    Even though my son is an advanced reader. These books are great way to explain feelings. that's it ok to have them and a healthy way to express them. They are worded simply easy to read only a two to six sentences per page. Great way to start teaching at a young age but also great for older kids that maybe struggling with emotions. My son Is ADHD and Mild Autism find these books help with some links that he was struggling with. We also enjoy some of the other books from these collection. Great way to open dialogue with kids on these issues as well. Highly recommended them.
    Helpful
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Top reviews from other countries

  • Captain
    1.0 out of 5 stars Print n paper quality is not that great..
    Reviewed in India on June 16, 2023
    Verified Purchase
    The media could not be loaded.
    The story might be good.. but the print n paper quality is not that great.. I recieved the book with torn page.. I am returning this book as it's not worth the money.. better to buy the kindle version..
    Customer image
    Captain
    1.0 out of 5 stars
    Print n paper quality is not that great..

    Reviewed in India on June 16, 2023
    The story might be good.. but the print n paper quality is not that great.. I recieved the book with torn page.. I am returning this book as it's not worth the money.. better to buy the kindle version..
    Images in this review
    Customer image
    Report
  • CherylRR
    5.0 out of 5 stars Helping Kids Turn Grumpy Days Around
    Reviewed in the United States on June 2, 2025
    Verified Purchase
    Grumpy Ninja is a fun, relatable story that helps kids recognize and manage their mood swings in a healthy way. The story shows that it’s okay to feel grumpy sometimes, but also gives simple tools for turning that mood around—like gratitude, kindness, and taking a deep breath. The illustrations are cute and expressive, and the message really resonates with young kids. Great for classrooms, SEL time, or bedtime routines. It opens the door to talk about feelings in a safe and silly way.
    Report
  • Kinsman Bookworm Gang
    5.0 out of 5 stars Sound advice for all ages, in a cute kid-friendly package!
    Reviewed in the United Kingdom on December 10, 2019
    Verified Purchase
    We all sometimes have grumpy days - whether we’re kids or adults. This fun book gives helpful advice on how to turn a bad mood around just by taking the time to look for the things in life that we are grateful for. Sound advice for all ages, in a cute kid-friendly package!
    Report
  • Tanner
    5.0 out of 5 stars Best collection on feelings
    Reviewed in the United States on July 4, 2020
    Verified Purchase
    I love all of these books. The colors are bright and vivid. The words are clear and easy to read. The messages are simple and meaningful. My little 2 1/2 girl has most of them memorized and can look at the back and list off all of the ninjas. Can’t wait to keep getting more.
    Report
  • Wendy Jo Bradshaw
    5.0 out of 5 stars How gratitude can make us happier
    Reviewed in the United States on December 8, 2019
    Verified Purchase
    A great reminder for kids young and old, that they can improve their mood and be happier, by choosing think about things they are thankful for. This is a great book for children of all ages, especially younger children who can easily understand the story and adorable illustrations.
    Report

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