I tried Apple CEO Tim Cook's 3.45 a.m. wakeup routine. It was a nightmare.

• Tim Cook has been the CEO of Apple since 2011 and has a net worth of $1.8 billion.
• He wakes up daily at 3:45 a.m. to start work.
• James White did this for three days but trying to hustle like the Apple CEO felt extremely unnatural.

"If you embrace that the things that you can do are limitless, you can put your ding in the universe. You can change the world," Apple CEO Tim Cook previously told Fast Company.

I love learning new things about successful entrepreneurs, and Cook is a perfect example. He has a net worth of over $1 billion.