Complacency is the kiss of death in business and in life. That’s why Jeff Bezos recommends using fear to drive work ethic and innovative-thinking — even when things are going well.

“I constantly remind our employees to be afraid, to wake up every morning terrified,” the Amazon founder wrote in a 1999 shareholder letter. “Our customers have made our business what it is,” he continued, “and we consider them to be loyal to us – right up until the second that someone else offers them a better service.”