I truly enjoy investing, spending a vast amount of time thinking about stocks and the businesses that underlie them.

My wife and my daughter spend absolutely no time thinking about investing -- it's just not something either of them enjoys.

I'm happy to bear the responsibility, but I won't be capable of doing it forever. Which is why I always ask myself one simple question before I invest in a stock. And thanks to that question, my wife and daughter, without lifting a finger, have helped me avoid some giant mistakes.

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Source Fool.com