Enjoy it - did the same two years ago - handed in laptop and stuff, lanyard, pass and never looked back once . You will miss some people, keep in touch with the ones that you want, and not miss others to be honest. Enjoy the strangeness of the first first few week and then embrace the fact that you are now in charge of your very own timetable, you can go when and where and how you like and at a pace to suit yourself and family. Do all the stuff you never had time to do when you were working. Keep fit and healthy and the rest takes care of itself. Welcome to the wonderful world of retirement