When a co-worker or employee does a favor for you, write a thank-you note. In just two or three sentences, express how much you admire the effort and convey your appreciation. Norman Brinker, who built a nationwide restaurant company that includes Chili’s and Bennigan’s, often said he rose to the top in part by jotting thank-you notes to employees. The five-minute investment has a ripple effect. Recipients may keep your card and find it a source of inspiration. And you will earn their loyalty and support as you advance.