"I feel like both work and family need more of my time, energy and focus. How do you develop a system or mindset to effectively balance the two?"
By saying both "work and family," I believe you may have meant to say you need for "more" time, energy and focus rather than "balance." Yes, no?
If you feel like you just don't have enough time, energy and focus every day, perhaps your goals and objectives are too ambitious.
Otherwise, Bill strikes a cord with the doing more with less notion. If you want "more," look for practical ways to do things more efficiently.
Another risk of small business ownership is to become too embroiled in all aspects of the operation.
A big time waster in small business is people who have difficulty in organizing and training people and delegating to them.