You might think of this as a great opportunity to try new things and live less rigidly. You chastised me because dance is my exercise of choice and because I like activities that involve my mind and have a component of surprise, liking surfing and skiing. Walking is of no interest to me, and I would die of boredom on a treadmill. I now better understand that you like everything planned out and predictable. When you are unable to follow your routine, it throws you for a loop. However, like you did with your walking, you can establish new routines. As others have said, there are a multitude of ways you can still get your exercise. There are "Sit and Be Fit" and so many similar videos on YouTube. Once you learn the routines, they can be almost as predictable as walking. You can even march in place from a seated position, using soft pillows so your tender feet don't feel like you are walking on shards of glass. In all your years of teaching, I am sure you had students where you had to try multiple approaches until they finally "got it." Now it's time to turn those same talents to your current situation. You have been dealing with a great deal of stress because of your husband's health issues, and this is probably behind many of the issues you are now dealing with. You are so fortunate to have a good medical team. I would definitely take advantage of that.