Is There a Limit to the Growth of a Business?

A girl friend asked me yesterday, if i never do another thing other than morning brew professionally, will i feel successful? And my answer to her was a resounding no. She asked why? And i said, because i'd feel like a one trick pony. But see, the ironic part of this whole thing is that i believe no matter how many businesses i build, i'll never feel like I've reached my potential. The ceiling will just keep moving as i do more. So the question is, how can i harness my desire to grow, but do so in a way that cha ing a never attainable target?"