Over the course of the last 10 years I've seen long time business owners nearing retirement age make one of two choices:
1) Sell there business, or
2) Run the business until their too tired and close it up.
As you look at your business, think about where you want to be in 5 years or 10 years. Understand that sometimes later in your business career you may not have the same energy to keep competing and/or upgrading to maintain status.