Nobody who has failed to get in shape failed because they did not know that training and sleep and reasonable eating were involved. Nobody whose writing project stalled was missing the insight that you have to sit down and write. In almost every case where I have watched someone stuck, including myself, the information required was fully available and had been for years. And yet the reflexive response to being stuck, mine very much included, is to go and acquire more of it.
I have come to think of this as the most socially acceptable form of procrastination available to educated people. It feels like progress, because learning is genuinely virtuous and produces a satisfying sense of movement. It is measurable, it is comfortable, and it can be discussed with colleagues in a way that "I have not started" cannot. Meanwhile the actual gap remains exactly where it was, because the gap was never about knowledge. It was about the willingness to do a thing that is boring, or difficult, or that carries some risk of failing visibly.
The diagnostic I try to apply is to ask what I would do if no further information were available. If the honest answer is that I know perfectly well what to do and simply have not done it, then the next book is not preparation but avoidance. It is not that learning is worthless; it is that learning has to be pulled by the doing rather than the other way around. Do the thing badly, discover the specific place where you are actually stuck, and then go and read about that. So, as a reflection for today: what do you already know you should do? And what are you studying instead?