2017 was jam packed with a variety of new methods, theories and tools for spreading the word about a business. With the plethora of social sites, new apps and expert suggestions, I had my hands full. Especially since I make it a policy to never recommend anything to my clients I have not tried out myself. But there was one experiment I tried this year that produced better results than any social media campaign or speech I gave. It’s not a new theory, hot app or magical software. Rather, it’s a good old-fashioned core principle of business development that I have taught my clients for years. Click here to read it: This article originally appeared on Inc.com.