The problem for most self-help books like Tim's is that the author usually underestimates what one might call "micro-judgments," the tiny, largely subconscious decisions that we don't even realize we are making. I suspect those micro-judgments are the reason people like TF or Warren Buffet consistently succeed but cannot consistently help other people succeed to the same degree.

<Personal Anecdote> I followed the 4HWW plan for creating a low-effort business. The first 5 ideas failed during initial testing, one seemed to work, but proved unsustainable (I lost several hundred dollars on this), and another works well, and is still my largest source of income. No other idea I've tried since then has worked out.