You have to understand what it is that you are better at than anybody else and mercilessly focus your efforts on it.

I believe in the value of paranoia. Business success contains the seeds of its own destruction. The more successful you are, the more people want a chunk of your business and then another chunk and then another until there is nothing left.

The Internet doesn't change everything. It doesn't change supply and demand.

Investment decisions and personal decisions don't wait for the picture to be clarified.

The sad news is, nobody owes you a career. Your career is literally your business. You own it as a sole proprietor. You have one employee: yourself. You need to accept ownership of your career, your skills and the timing of your moves.

Most companies don't die because they are wrong; they die because they don't commit themselves. They fritter away their momentum and their valuable resources while attempting to make a decision. The greatest danger is standing still.

Competition is warfare. Mostly it is played by prescribed rules--there is a sort of Geneva Convention for competition--but it's thorough and often brutal.