" But wait, that’s not enough. Not only do you need to find a Dip that you can conquer but you also need to quit all the Cul-de-Sacs that you’re currently idling your way through. You must quit the projects and investments and endeavors that don’t offer you the same opportunity. It’s difficult, but it’s vitally important. "

― Seth Godin , The Dip: A Little Book That Teaches You When to Quit (and When to Stick)