 Discomfort is not a nice to have, it is a prerequisite to grow, it is a necessity. The only way you can change the physical body and the human body is to push it to a point of appropriate discomfort. Most people don't know this, but there's a brain structure called the anterior mid-singulate cortex. What's interesting about this brain area is there are now a lot of data showing that when people do something, and this is the important part, that they don't want to do. It's not about adding more work, it's about adding more work that you don't want to do. This brain area gets bigger. It's hard. It's hard to change a habit that maybe you've had for decades. It's not easy. If it was easy, you would already be doing it, and people have such a fear of discomfort. In many ways, scientists are starting to think of the anterior mid-singulate cortex, not just as one of the seats of willpower, but perhaps actually the seat of the will to live.