To succeed, startup enterprises need both passion and good management. But entrepreneurs can be famous for their visionary ardor and still be lousy managers. Traditionally, the key to long-term growth is getting the company founder to step aside so professional management can take over. Sometimes, however, this means abandoning a company's greatest asset in order to improve its procedures. A better solution is for the entrepreneur to learn to manage. Kye Anderson had motivation to spare. When she was 13, her 47-year-old father suffered recurrent shortness of breath followed by a massive heart attack. For her, the result was a single-minded career in medical technology and the development of innovative systems for diagnosing heart-and-lung disease. She had the zeal and determination it took to sell her ideas to investors and doctors, found a company, and grow it. But then, on the grounds that she lacked the financial and managerial expertise to carry her business from exuberant adolescence to profitable maturity, she stepped aside. A year and a half later, Anderson came back. She picked new board members who could act as entrepreneurial mentors. She reasserted certain original core values such as the importance of R&D and the emphasis on the patient as the ultimate customer. She discarded business lines that had strayed too far afield, and she learned how and what to delegate. Most important of all, Anderson realized that a leader's greatest obligation is to preach, and she began to spend much of her time communicating with her own employees about the purpose, mission, values, and strategy that could carry the company into a billion-dollar primary-care market.