However, having been through a fairly significant psychological journey myself and then reading the 12 Rules for Life, I'm quite worried that his rules have the potential to prolong or exacerbate psychological insecurities. Some of them, e.g. "Pursue what is meaningful" and "Make friends with people who want the best for you." are absolutely fine. But there is nothing there I can see about self-compassion or self-acceptance. If anything there's a general trend in the opposite direction of encouraging self-criticism. This probably works in the short-medium term for people who experience pleasure from validating their own self-critical thoughts, but I fear in the longer term that it will postpone or diminish their potential to love themselves.

Admittedly I have only read the rules themselves and not the whole book; in fact I'm reluctant to read the rest if that is the best he can do.

I read all sorts of terrible stuff, and it probably influences me more then I'd like, but it's easy to jump in the middle of something that "seems" reasonable on the Internet.