Having retired recently, and spending time catching up with friends over coffee and cake, I was determined not to pile on the pounds, so I do some form of exercise every day.
I walk/jog in the morning, then do some of the yoga poses I like best, do some weights, and ab exercises, I try and vary it and add in some wii games. I put on my music and do any necessary chores around my flat to the music, it really helps you get motivated.
I make sure I have me time over a long lunch then have a nice long walk in the afternoon, no matter what the weather, I listen to my MP3 to put some spring in my step.
I give myself the weekend off and enjoy nice treats (be it yummy food/cakes or glass(es) of wine) without the guilt as I feel I've worked for it! Good luck ?