Has anyone here read the E Myth? It discusses this very thing. A business owner can be three positions:
The Manager is what your strive to be as the business grows. Otherwise the 50+ hour weeks will burn you out and your business will fail.
If you have to be there everyday the business will fail. If cant find a "technican" to operate your business then you will fail. Folks this is the reason 95 percent to new business fail in the first 3-5 years due to owner burnout.