Does go off on a lot of tangents, but it's more interesting than books which keep rambling on the same idea chapter after chapter.
For example, from the end of Chapter 1, 'What is Leadership, Anyway?': "Make a list of situations in which your presence seems to increase the productivity of others. Alongside this list, identify situations where your presence seems to decrease productivity. [...] What do these lists tell you about yourself and the environments that empower you?"
Weinberg has a way of getting you to reflect that I find profoundly valuable, if I am willing to do the work.
Don't be put off by the fact that his books are self-published, and the covers aren't great. He is brilliant.