Running a startup is not all sunny days and clear skies. In fact, first-time founders and serial entrepreneurs alike will tell you, there are weeks and months of struggles, minimal hard-won successes, daunting lessons, crushing pressure, and financial instability involved in running a company. That’s why it takes a certain kind of person to believe in themselves and weather the sturm und drang that may wash over them. For an idea of the unwieldy weather to come, read on.