World's richest man, Jeff Bezos reveals the secret to his success in his new book 'Invent & Wander'

Many of the world's most successful people survive on no sleep, make thousands of decisions a day and have no time for themselves.

But according to Jeff Bezos, the world's richest man with a net worth of $181.4billion, the key to success is eight hours of sleep a night, making three key choices a day and having all his important meetings before lunch. 

The Amazon founder and CEO penned an essay about how he makes decisions in his new book Invent and Wander, which was released last week. By 10am, he's ready to take on what he calls his 'high-IQ' meetings of the day. 

And when the clock hits 5pm, he shelves anything 'high IQ' until tomorrow. 

Bezos said he's able to fit everything into that seven-hour window because he knows how to prioritize.