This what I tried to do at times over five years when I felt “destroyed” by increasing cognitive impairment.
It helped me. “Looking down?” Try to “look up.” It feels a lot better.
Try to do some great things, whether small or big. You can feel better. Just saying hello to a stranger or friend or beaming because of the sunny day or being helpful in some small way will make you and others feel better.
Don’t worry about what you lost. Rejoice that you can still help make things better.