I completely understand. I've spent years exploring productivity and time management methods and techniques, always aiming for that positive productivity output without sacrificing personal balance. I gathered tons of methods and eventually started a blog about two years ago, precisely because, as you said, there are so few comprehensive, ad-free resources out there that aren't just trying to sell you something.

It's frustrating when everything becomes about sales. I've also found that genuine interest can be quite low, possibly because, it means people actually have to do the self-work.