I totally understand. I don't work anymore but I help take care of my aging parents as well as grandchildren. I am 60 (almost) and had Polio as a child. I am unable to do strenuous exercises and to be honest I stay so stressed I don't even try any more. I need to lose at least 30 lbs to ease some of the load on my feet and legs but I just can't get motivated. I think it's due to depression.
I wish you much success.