It has nothing to do with money. It's about ruining your life trying to make something work that just isn't going to work. I put my company before friends, family, and my health.

It's easy after-the-fact to see that, but it's hard to know when it's happening. Possibly the most celebrated entrepreneur is Elon Musk, and I don't think there's any question he put his company before his personal life multiple times in order to succeed. But how many other people have done that and then failed? It can leave you as a shell of your former self.

Everybody talks about the upside. Nobody wants to talk about the downside.