Rationality training by itself is worse than useless. Apply things in practice or you risk building free-floating castles detached from any practical application. A basic rule of thumb: if you spend more than 10-15% of your time on meta improvements, you are probably accomplishing less in your life than you could be. That means 85% to 90% of your time should be spent doing actual work.

Yeah, CFAR-style rationality training is the goal: carried out by actually troubleshooting and solving one's real-life problems, while also building a community of like-minded people to remind you to actually think about your problems instead of doing whatever default thing comes to mind.