Obstacles are what you see when you take your eyes off your goals.

The product has to work. It has to be a good product. An enormous number of them are all hype with no value at all. People get into them because they want to make a lot of quick, easy money.

All the businesses from the beginning of history have struggled with product development (assuming there is a market, doing the market testing and so on). But now they start with customer development. Get the customer who says, "Yes. I want that. I need it. I wanna use it. I'll pay for it." And then you go back and work with your engineers. It is changing the world!

Single-minded concentration in the direction of your dreams intensifies your desires and increases your self-confidence.

Action without planning is the cause of all failure. Action with planning is the cause of all success.

Resolve to be a master of change rather than a victim of change.

To improve your life, be prepared to make new choices and decisions.