Warren Buffett Says He'd Be Broke if He Did This One Thing

When it comes to investing money, Warren Buffett clearly knows what he's doing. Buffett is a billionaire many times over, and while his stock-picking prowess has largely led to his success, another reason he's so wealthy is his frugal tendencies. Buffett bought his first house in 1958 for $31,500, and he's yet to upsize -- even though he clearly could purchase his own mansion (heck, he could easily purchase an island if he wanted to).