Frank:
Congratulations on the first day of the rest of your life. I retired from 27+ years of Federal law enforcement, working 50 hr (mandatory minimum) per week for most of that time, plus active duty military time prior to that and 27+ years of active time in the Naval Reserve. I retired on 3/3/99, I guess I needed a date I could remember. My retirement was earlier than I had planned, and was based on the fact that I was burned out and stressed out.
Retirement, I have found is really a state of mind. If you approach retirement, like everything else in life with a positive state of mind, you'll be in good shape. Have plenty of things to keep you going, and in a while, you too will wonder how you ever had time to work at a regular job.
George Burns (in his 90's at the time) was once asked the secret to his long life. His answer was getting out of bed in the morning. He said if you have a reason to get out of bed and do something, it's easy after that.
There's probably some favorite charity you'd like to help, even if it's just getting the elderly lady next door to the market, or fixing up her screen door on her house, or maybe helping the Special Olympics, you'll get a reward that feels like getting your battery recharged.
There will be some adjustments to be sure, but you will get through them and be a happy guy. Look at the faces of the guys that retired a couple of years ago. They look five years younger than when the worked. That should tell you something.
Good luck
Joe
