One of the core fundamentals which I use to coach small to mid-sized business owners is the 5 Steps to Freedom – a predictable set of organizational developmental steps business owners typically must go through to achieve their goals.

As the business begins to leverage the economies of scale it allows the business owners to begin the process of extracting themselves from the business by further empowering their team to run the business for them.
The time management plan is a critical step in that process.
A time management plan works when you keep it simple and stick to it. Decide what only you should be doing, hand the rest to your team, and protect time each week for the work that moves the business forward. To see where this sits in the bigger picture, have a read of the 5 steps to freedom for business owners. There is also a useful page on time management on Wikipedia.