Working with Silicon Valley companies, I noticed that in the early days of a company, they would have a sense of this is what we're trying to do. The success, if allowed to be undisciplined, would become a catalyst for failure and that undermines everything. That's why essentialism subtitle is the disciplined pursuit of less. It's because it's an antidote to that problem. We can become essentialists before we have to, before we start to fail altogether," he says.