When things don't go Grumpy Ninja's way, Grumpy Ninja's mood takes a dive and Grumpy Ninja becomes super grumpy.

For example, when the pencil sharpener refuses to work, it makes Grumpy Ninja lose control of BIG emotions. Until one day, a friend shares how a little rest, relaxation, and a simple change of mindset can change anyone's mood and perspective, even when things go wrong.

Find out what happens in this comedic book about how a little gratitude might change your perspective.

Life is hard! And 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 3-11. Perfect for boys, girls, young readers, primary school students, or toddlers. Excellent resource for counselors, parents, and teachers alike. Collect all the Ninja Life Hacks books and sets by Mary Nhin!