Starts by figuring out how much you're willing to sacrifice to reach that next level. Things get more interesting if your established agency has the vision to empower that growth beyond what is traditionally expected. If and when those conditions develop, there's a good chance your book of business could scale to staggering levels. The hardest part of the whole process might be developing a passion for something (niche) that might not be apparently obvious. That's what I talk to Patrick Muscenti, of McGowan Insurance, about as he tries to test his threshold limits.