Seth has hundreds of thousands of fans and at least a few notable critics, but there’s one thing about him that everyone agrees on: The man is prolific. According to him, he reads, researches, and writes an average of fifteen hours a day. He publishes a post on his blog every single day, no exceptions.19

Most people’s mental models of energy are flawed: they think there’s a ‘tank’ of energy that gets depleted as you spend it. This may be roughly true for physical energy, but mental energy is different: spending mental energy on things that you consider productive or important gives you more mental energy for other things: a positive feedback loop.