Knowledge is not a linear path where you go from A to B to C. Knowledge is an infinite network, and things are connected in ways that may not be obvious.
The right book for the right person is not enough. It needs to be the right book, for the right person at the right time.
We are living in a world of information abundance. There’s no room for scarcity mindset, no room for guilt. The opportunity cost of being stuck in your learning is way beyond the price of a new book.