You may recall our “PEP” model for successful entrepreneurs—that success is based on a combination of Passion, Experience, and Persistence. We have another model grounded in Ps that has come up several times recently in discussions with founders: When is it time to throw in the towel? Or change directions? Or jump all in and put the pedal to the metal? Virtually all startups have those inflection points, both negative and positive, that lead to doubt—or euphoria. The venture journey is littered with such times, both for specific decisions (like letting an employee go or changing terms with a customer, etc.) as well as overall sink or swim moments. So how do you approach these inflection points?