Before he became one of the nation's most recognizable real estate brokers, Ryan Serhant made just under $10,000 in his first year in that industry. Today? His properties regularly sell for eight- or nine-figure sums — and his scaling story is just getting started. "If you're not growing, you're dying," Ryan said. Hear the CEO and founder of SERHANT and star of Bravo's "Million Dollar Listing New York" share his biggest keys to growing brands and businesses.