There's definitely a procrastination trap that someone has to be aware of, but I wouldn't say all the self-help/management is a sham. Much like people who get stuck researching, there comes a point where you simply have to act. There's also value in learning how to quickly pull items out of texts that you can use right now and discarding the rest.

I liken it to jiujitsu in a way. When I first started and knew nothing, I needed a lot of instruction and of course then practice. After years of that, I can now take a simple tweak to something I've been doing for years and suddenly it's much more effective. Finding those tweaks is the challenge, while also avoiding chasing silver bullets or bouncing to new thing after new thing and never getting good at something.