Watch the product life cycle; but more important, watch the market life cycle.

Every company should work hard to obsolete its own product line - before its competitors do.

Thomas Edison had great visions (for lights, music players, movies, etc.) but he knew they didn't count until he could make them work. His statement that creativity is 99% perspiration makes that point. Consider how much time he spent trying to make a synthetic rubber material for tires and never stopped trying but he never succeeded.

The theory of marketing is solid but the practice of marketing leaves much to be desired.

Every business is a service business. Does your service put a smile on the customer's face?

Turbulence is a condition that we all experience during a flight when the plane is bouncing around by competing air currents. By analogy, the economy may bounce around a lot because of competing currents of public moods and investments. One week everyone might be optimistic and then suddenly something happens to turn everyone into pessimists. Investment dries up and investors become risk averse. A sudden piece of good news then turns around the public mood.

Too much of the income gains go to too few people, even though all of the stakeholders worked together to make their companies successful. By failing to put enough income into more hands, the GDP grows slower and consumers manage to meet their needs by incurring high levels of debt.