Mostly it’s retelling “deliberate practice” theory of Ericsson. First of all, this theory is mostly dismissed now https://www.ncbi.nlm.nih.gov/pmc/arti... And second, if you want to know about this “10000 hours, Gladwell book is definitely a better written book.
I've learned that myelin is a substance that helps us remember and learn new things. This book teaches you how to start a habit and keep it going. So I recommend this book to someone who want a to develope something amazing.
The book reinforces already published information.
The book offers some decent guidance and good information. Several areas of the book are retold from other books. Good reinforcement of published information.