Frequently the magic happens when you get two parts to mate effortlessly, or you save yourself from screwing up and breaking something. Other times it is when you look up and see an amazing sunset.
This happened last fall as I was swapping a gearbox between two engines, and the only camera I had handy was my cell phone. I looked up and snapped this pic. Ran inside the house to grab my “real camera” and the moment was gone.