I’ve spoken with thousands of entrepreneurs, worked with hundreds, and went into business with a handful over the last seven years. It’s been a wild ride, a fun ride. I’ve seen lots of ups, some definite downs, and one common characteristic that all successful entrepreneurs and businesses have. More on that in a bit. First, let me tell you a story, my story. My first year out of college was both the toughest and best year rolled into one. Graduating with degrees in business and entrepreneurship from a college known for turning out nurses and engineers doesn’t exactly give you …