Dark horses (who emerge unexpectedly) and underdogs (who have the odds against them) are not the same thing. Still, I can think of no better combination as a model for approaching the world.
While one cannot be a dark horse forever, and one is unlikely to be an underdog perpetually, it’s a powerful and satisfying perspective from which to work.
The dark-horse underdog by his or her nature approaches issues without entitlement, without over-confidence. There is, each time, nothing other than the work of observing, assessing, and writing thereafter.
One’s obligations begin anew, without credit for past work, each and every morning.
There are other perspectives from which to view the world, but I believe this to be an especially good way to begin, and carry out, a day’s agenda.