Running a business is like juggling flaming torches while riding a unicycle, blindfolded. You’ve got employees, customers, operations, and, of course, vendors. Vendors keep the gears turning, but if you’re not careful, those relationships can turn into a never-ending headache that eats up your time, money, and possibly your sanity. So how do you make sure your vendors work for you, rather than the other way around? Here’s how to get the most out of them without losing your mind.