Consistency and authenticity are about doing what you expect of yourself, not what others expect of you.
Even when something is useless, even when nobody is paying attention, even when 99.9% of people would act differently, even when you will not get any reward. Doing that is what builds your persona, your character, your set of values, your story. And by doing it repeatedly, you are authentic.
Others are unfathomable, they falter, they change, they do not know you and what you are around to do. They know themselves, and they can choose, each one of them, for their own consistency.
Take ownership of your own.