For many entrepreneurs, the stretch between Halloween and New Year’s is when teams get stressed, systems get strained, and even the smallest inefficiencies amplify into crises. But if a company builds itself well enough to survive into January, it’ll be in great fighting shape for the rest of the year. That’s what happened to popular New York-based cupcake company Baked By Melissa, whose disastrous 2009 holiday led it to rethink fulfillment year-round—and win the holidays every year since.