Most of us hear about the need to arrange our finances for when we retire and we are no longer working for our income. However, there is more to it than just finances.
Are you prepared to have the long hours, days and weeks with no routine? Will you have the necessary inventory for any hobbies you might wish to pursue?
How about doing all the prep work now? Plan ahead. Look for a balance of physical and mental activity.  Stay focused on what you will do to live fully every day. 
Remember...there is plenty of life possible after retirement and Don't Die Before You're Dead!