A 3 step guide to launching a successful business, culled from Inc. The most common mistake entrepreneurs make when launching something new is trying to do too much at once. I call it the hammer-and-nail syndrome. Let’s say I give you one hammer and one nail. Your job is to hold the hammer in one hand and the nail in the other. All you have to do is drive that nail into a piece of wood. That’s it; just nail that one product or service. You may miss the......