It’s easy to get excited and arrogant when things are going well but it is important to remember that success is very fragile. Digg sold for $500K after being worth $200 million just a few years ago. In the same time period, RIM, maker of the Blackberry, lost 95% (!) of its value. There is continual disruption in our industry and you are likely to fail if you get complacent or stop evolving.
The Internet is a shark.