This "self-help for kids" book is bright and cheerful, concentrating on growth mindset and marginal gains. I think it would work very well as part of a pastoral program for children from 9-13; obviously those with a fixed mindset have the most to gain. I am slightly worried by the emphasis on success. At no point is there help on how to deal with setbacks; what to do if you fall out of love with an activity; getting help and so on - it sort of presumes a supportive family, too. So it's a great start, but for me definitely needs to be part of a larger picture of PSHE rather than a complete solution.

I am unable to comment on the illustrations as the ebook copy I received rendered so poorly they were impossible to interpret.

I was about to give up reading this book as I found the first section difficult to follow (child average and child awesome naming wasn't helping) but I am glad I continued to the other sections. I  liked this book. The idea behind to book is great. Lots of kids and teens have self esteem issues and doesn't really understand what future holds. There are some good suggestions like the worry jar and I liked those bits of the book. Also good illustrations.
If I had a teenager would definitely read the book together.