I’m just about to leave a startup I’ve been working at for a year. I am eager to delve into business but part of me says that I am just being a kid. I have barely enough capital and no idea what kind of business I want to start. And yesterday, a former employer offered me a job, quite senior, and needs only a one year commitment. Everyone keeps asking why I can’t do both. Can you really start a company on the side and your work will not suffer?