The difficulty must be deciding when to stop Lee.
I mean you obviously have a formula for growth, invest a large chunk of profit or most if it into leaflets every year and increase your turnover.
It's only when you stop advertising for growth that you can actually keep the profits for yourself.
It must be quite difficult to decide when that point will come, I would be torn between keeping going just to see how far I can go or pulling the plug and saying enough is enough I'm happy with 100k a year takehome (example).
I mean as a business owner if you can build a business that runs itself, how much do you need as a passive income £40k, £400k, £4m?
I suppose you ultimately have to decide what kind of life you want to live.