I’ve become increasingly convinced of this comfort zone theory to the degree where I’ve started to apply it to chess. To use the same logic, I believe a chess player is more comfortable in an opening that they have played since childhood. They’ll be less likely to make mistakes in that opening. You can also apply it to tournaments as well. During the course of the book, I’ll talk about the tournaments that I felt comfortable in, and by the same token the opponents that I felt comfortable facing and the ones that I didn’t feel so happy to play.