The woes of a billionaire

Being rich isn't all it's cracked up to be, according to Minecraft billionaire Markus Persson.

In a series of tweets over the weekend, the video-game designer bemoaned the loneliness, isolation and lack of motivation that large wealth can create.

"The problem with getting everything is you run out of reasons to keep trying, and human interaction becomes impossible due to imbalance,".

"Hanging out in ibiza with a bunch of friends and partying with famous people, able to do whatever I want, and I've never felt more isolated."

He also wrote that employees of his company "hate me now," and that he found a "great girl, but she's afraid of me and my life style and went with a normal person instead."

Regardless of whether his tweets were momentary venting or a sign of deeper malaise, Persson's comments reflect some of the lesser-known downsides of a massive windfall, or "sudden wealth syndrome."

This has been known to occur among founders who sell their companies (Microsoft acquired Minecraft last year).

Entrepreneurs who are naturally driven to create, build, innovate and work around-the-clock realize their dream upon selling their company. But once they do, they sometimes find themselves flush with cash but deficient in purpose.

What's more, being rich allows someone to disengage from the hoi polloi and live in peace on the top of the mountain. But that peace can also be isolating.

Add to that the distrust that can come with being rich—as some assume everybody wants something from them—and being rich can quickly become its own form of prison.

Persson's comments offer an important lesson: When it comes to large wealth, be careful what you wish for.