As part of the "How I Made My Millions" series, CNBC.com asked the founders and CEOs of these companies to share their experience on a variety of topics. What follows is advice for starting a business even in a tough economy from TerraCycle's Tom Szaky. Recession. Depression. Just plain tough. Whatever you call the economy today, the sane among us would have you believe it’s a lousy time to start a business. Except it isn’t. I’ve been operating TerraCycle <http://www.terracycle.net/> in a recession-smart way since the start, and have four ways you can, too: