SillywillyWoohoo
Hello there and I think you found one of your answers accidentally................keeping busy is a great anxiety buster. Once you were focused on your daughter your own Health anxiety took a back seat.
One way to change thought patterns is by limiting time spent thinking. Find a hobby or a distraction that you enjoy, preferably one that has a high degree of mental concentration. Painting and drawing are good examples. With both these activities, your mind is on the task at hand so you have very little time to picture or think about what causes you stress. The main point is to find something you enjoy that can be done for a long period of time.
Take care and I hope your daughter is doing well.
Kitt