As a man who loves tinned spaghetti hoops, drives a six-year-old car, and holds meetings over a burger at McDonald's, it is fair to say that Aaron Levie is not your average multimillionaire.
He lives in a modest apartment, doesn't take holidays and, at the age of 27, says his biggest luxury is his iPhone.
Yet a multimillionaire Levie most definitely is, with an estimated worth of $100m (£64m).
The boss of fast-growing US cloud storage business Box, Levie is too focused on work to be bothered about luxuries. He doesn't leave the office until the early hours of the morning at least six days a week.
"I work so many hours because I love what I do. I'm incredibly stimulated and excited about the business," says Levie.
"But at the same time, I realise that you do have to a certain level of discipline and determination to succeed in life - you have to work hard and make lifestyle sacrifices. That applies to everyone."
Based in Los Altos, California, in the heart of Silicon Valley, Box provides companies and consumers with remote electronic-data storage, also known as cloud storage.
In simple terms, instead of buying a hard drive or server, customers rent space on one of Box's, which they access via their computer or smartphone.
The company is used by 460 businesses on the Fortune 500 list of the largest US firms by revenues - everyone from consumer goods giant Procter and Gamble to advertising company Clear Channel.
Box's revenues last year totalled $70m, up 160% from 2011. And it is worth an estimated $1bn after securing hundreds of millions of dollars of venture capital investment.more