How do I think of myself as an entrepreneur?" asks William Hagstrom, CEO of Crescendo Bioscience. As someone who has studied Myers-Briggs personality types, he describes himself as INTP and as someone who is fairly intense and analytical. He also tests high in vision, deliberation and innovation. "It's important to know yourself," he says, "you can't force a style that doesn't work for you." With all this being said, Hagstrom adds, "it's not just about your strengths but also about your passion."