“If you want to create something worthwhile with your life, you need to draw a line between the world’s demands and your own ambitions. Yes, we all have bills to pay and obligations to satisfy. But for most of us there’s a wide gray area between the have-tos and want-tos in our lives. If you’re not careful, that area will fill up with e-mail, meetings, and the requests of others, leaving no room for the work you consider important.”