Stress got the better of me, and I failed to keep my promise.
I'm going to try again.
Today's rainbow came early enough to leave me hoping there might still be another rainbow or two to come: Driving to work, I didn't hit a single red light, and there wasn't a single slow-down on the freeway. All traffic lights were green, right up until I reached the intersection where I needed to turn left, but then the left turn arrow was green.
Yes, a small rainbow, but a rainbow, nonetheless!;)