Earlier this month, Jeff Bezos stepped down as the CEO of Amazon, the company he launched in 1994 as an online bookseller. Today, Amazon is an ecommerce behemoth worth $1.8 trillion, and that company has made him the richest person in the world with a fortune worth over $200 billion.

Over Bezos' roughly 27 years as CEO, he's regularly shared advice and lessons learned in interviews and his annual letters to Amazon shareholders.