Love this Steve Jobs story:

…Jobs turned around Apple and did it pretty quickly. He did two primary things as far as I can tell. First, he got his people into the top jobs and got rid of the executives who had been calling the shots before he showed up. And second, he brought focus to the product line, and thus everything else.

There’s this great scene in the book where Jobs draws a classic four quadrant chart, consumer and pro on one axis, desktop and laptop on the other. And he says “we are going to make one computer for each quadrant and we are going to kill all of the other product lines”.