I don't know how I ever found time to go to work! Left on redundancy at rather short notice, bought a house and found a part-time job with a famous University, got married, loads of diving trips. After our parents passed on we had few full-time ties to the UK so we sold up and moved to the South of France. Been here a year now and have never looked back.
There are so many options. As has been said, occasional dreams about still being in the Service, but that's more common than many realise.
If I were bored, there are a thousand things I could do. It's not hard to stay occupied. Then there's always the "Honey Do" list.
There is nothing to fear.