If you really don't know what you will do after you retire, consider volunteering for someplace that needs your experience to help others. You can probably pick the hours you want to work, and that work is so much more rewarding then just working at a job.

Look around, find something that really bugs you because of the way it is, and figure out what you can do to make a difference. There are a lot of great originations that do some really good stuff and they need your help. If the first try doesn't trip your trigger, try something else. When you hit on the right one, it doesn't feel like work! Gene