Answer:
1. have lots of money in the bank
2. don't rely on employees to do all the work for you
3. expect to work harder than you do now
4. don't expect miracles
5. don't spend money just because your business is growing, and making more money. When you do, that's when work slows and your chasing your tail.
this might scare you away, but not having to answer to someone when you took a day off is worth it. If you go by these five u will make it I'm sure.