This is a book of 52 changes you can make in a year, one per week. It’s not meant to be read all at once. Instead, consider browsing through it but focusing on one small chapter per week. Open the book the following week and focus on a second chapter, and so on. We’ll call it single-tasking. You don’t need to make all the changes in this book. You can easily pick 10 things, or 20, and focus on those, and do some of them for 2-3 weeks. You could pick 12 and do one per month. This is a book of the 52 changes that I’ve made that I think matter most. Why are there exactly 52, instead of 45 or 73? It’s a convenience — 52 weeks in a year, 52 changes, one per week. I could have picked 12, but that would have been less fun!