Mine is not to reason why, mine is just to sell and buy.—-Steve Robbins, DWA Message Board
Steve posted this in response to a thread discussing various monetary and fundamental worries in the current market. His response indicates his confidence that if a particular market worry manifests itself, it will be reflected in securities prices and can be responded to appropriately at that time. This is a healthy attitude (I think) because it avoids many of the cognitive biases that harm performance and focuses just on the actual trend in the marketplace. The trend is your friend, until it ends. The time to act is when the trend ends—not before, based on your worries.