The document outlines 10 common mistakes that marketers make during tough economic times. These include adopting a "bunker mentality" and cutting marketing, continuing messages as if nothing has changed, not closely tracking results to make adjustments, failing to meet customers where they are, marketing what they want to sell rather than what customers want to buy, not recognizing opportunities, letting expectations outgrow budgets, focusing only on new customer acquisition over retention, not listening to advisors, and not making public relations a bigger part of their efforts. The document argues that these are myths and marketers should continue and adjust their marketing during downturns.