Psychological Self-Help - new - Table of Contents

This is a book associated with the PC website. I didn't post this in "Self Help and Goal Setting" because it's not really about goal-setting but summarizes a broad range of self-help related material. I'm finding it interesting and wondering if anyone else here has used it. It's searchable and the table of contents for each chapter is detailed as well.

I'm looking at decision making, for myself, a big problem I have. The personality types were also interesting - describing an ancient personality classification system (ennegram) and then which of these likely combine in various personality disorders as well.