Yes consistency is an absolute skill to develop, but that skill develops from the constant ups and downs. There's a point at which the down feels just as good as the up. For me, it's because I now associate downs with the contrast required to experience my next up. It's more of a navigational tool. Like throwing down a black canvas so that I can begin to paint in white. You would never get "upset" at a black canvas because you understand it's purpose in the creation of your art. I see life in the same way, and it really helps with patience and also, the excitement for (as you said) the transition to dawn.