SELL OR BE SOLD Execution is the “act, assess, adjust” trio, but it also has another three-headed pilot: selling, marketing, and communication. If you’re idea-empty while saddled to the couch, here’s what you can do in the meantime: learn how to sell. Selling and all of its cousins (marketing, copywriting, negotiation) are the most important skills, no matter what your business is. These skills can be banked for life.