Adventure can take many forms, you just have to look outside yourself to see. For example, I’ve flown to Paris many times, that’s no longer an adventure for me (though I do love visiting the Louvre any time I’m in Paris). Finding adventure and interest in everyday life whether it’s traveling to a new place or visiting my local coffee shop is the real adventure for me. So many people are amazing, but you have to be curious. I wish you luck on finding whatever it is you’re seeking.
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.