Geniuses come in many shapes and colors, and they often run in packs. If you can find one, it may lead you to others. Collaborate with geniuses. Send them your spells. Look carefully at theirs. What could you do together? Combination is creation.
Be careful not to start a company that really belongs as a feature of another company, like the 25 Twitter URL shortener companies out there. Pick a real problem that's here to stay.
Carefully calculate the potential size of your market to make sure you can grow. Before starting Mint, I knew that there were about 20 million people who had purchased 'Quicken' or 'Microsoft Money' over the years, and 80 million people using online banking in the U.S. alone.
It's all about trying to be very careful about what your next role or what your next move is gonna be. It's all about trying to have longevity in this business and make smart choices.
In general, when you have success on the field, you're more popular, and you have that fame that comes with it. You realize you're in the public eye more, and you've got to be a little bit more careful about some of the things you're doing out in public and make sure you're smart about the things you say.
When you look at Yahoo Answers, there can be a lot of garbage. But if you're careful about the rules and supporting good contributions, over time you can get better and better, like Wikipedia.
Happiness quantification sounds a bit wishy-washy, sure, and through a series of carefully administered surveys across the globe, economists and psychologists have certainly confronted a fair number of sticky issues around how to measure, and even define, happiness.