One of the things I benefited from when I started this business was that I didn't know anything. I was just instinct with no preconceived notions. This enabled me to learn and change quickly without having to worry about maintaining any kind of status quo, like some of my bigger competitors.

One of the things I benefited from when I started this business was that I didn't know anything. I was just instinct with no preconceived notions. This enabled me to learn and change quickly without having to worry about maintaining any kind of status quo, like some of my bigger competitors.

The point is, you can't keep doing the same thing and expect it to keep working.

I have no doubt that in the future, wearable devices like Fitbit will know my blood pressure, hydration levels and blood sugar levels as well. All of this data has the potential to transform modern medicine and create a whole new era of personalized care.

Twenty years and $40 billion. They seem like good round numbers.

Our business is about technology, yes. But it's also about operations and customer relationships.

Recognize that there will be failures, and acknowledge that there will be obstacles. But you will learn from your mistakes and the mistakes of others, for there is very little learning in success.