This is a quote from some Jason Fried interview, allegedly. Even assuming this attribution is correct (don’t care ‘cause it don’t matter) . . . it rings true.
Tell me how you make money. Not what you do, how you make money. Okay…draw a circle around that, what is needed to make that a) happen and b) grow…and then draw another circle and decide how to protect that.
Everything else is clutter.