It takes a special person to be proud of the work they do. I can see you have that in your heart to do so. You have done a wonderful job mowing that lawn. I am 70 now, once did the same as you, but never had your kind of equipment. It is still very hard work. When you get older, the old body wears down real easy. Take good care of your feet, in good shoes. Keep the videos coming, they bring back many memories, that I can now set back and watch. Bless You.