This document summarizes the concept of "marketing myopia", which refers to a short-sighted focus on a company's internal needs rather than defining itself based on customer needs and wants. Marketing myopia was first discussed by Theodore Levitt and can be caused by a narrow view of the marketing situation and excessive focus on products over customers. Industries like dry cleaning, Hollywood, railroads, and grocery stores have been affected by marketing myopia. To prevent it, companies should focus on customer orientation, marketing, looking for future opportunities, and retaining existing customers. The conclusion is that focusing on customer satisfaction and needs requires companies to renovate their mission, vision, and goals.