I learned this, at least, by my experiment: that if one advances confidently in the direction of his dreams, and endeavors to live the life which he has imagined, he will meet with a success unexpected in common hours. - Henry David Thoreau
Yeah, I'd say on the trail one certainly should "...advance confidently in the direction of his dreams..." In so doing you are likely to meet with success.
The Thoreau quote--while not written about Ultrarunning but appropriate nevertheless--reminded me of an Ayn Rand quote from Atlas Shrugged that I once used as part of my signature block:
He knew that he felt an odd, joyous, light-hearted self confidence. He knew that these were the right steps down the trail he had glimpsed.
This was a great novel from the standpoint of the craft of writing....though Rand's political and economic philosophies are totally abhorrent to me. But under the concept that even a blind squirrel will occasionally find an acorn, even Rand can turn a phrase that will resonate with someone for a totally different reason than the original intent.