When you start anything new, there are forces pulling you in a variety of directions. There’s the stuff you could do, the stuff you want to do, and the stuff you have to do. The stuff you have to do is where you should begin. Start at the epicenter.
For example, if you’re opening a hot dog stand, you could worry about the condiments, the cart, the name, the decoration. But the first thing you should worry about is the hot dog. The hot dogs are the epicenter. Everything else is secondary.