We imagine the impossible for ourselves in order to temporarily look upon ourselves as doers of greatness and, when failing to achieve these imagined heights -- as must be the case with all things impossible -- then we are driven to embrace that self-pity and despair always attending the self not "good enough" to win the world it imagined.
But if we would work to do the possible, by conquering our own self-created, ego-centered imaginings, then would we discover that the Greatness to which we aspire lies not in the dream of doing something impossible, but in the Possibility we already are within what we are given to be in the moments of our tests and trials.
It is one of the great spiritual mysteries that there are times and aspects of self in and through which it is impossible to progress upward. But, even the smallest steps within what can be done in any given moment changes the fabric of time and self enough so that what was once impossible then becomes a possibility... But only when we're willing to challenge what we still imagine ourselves to be with what we're willing to work through to become.
And as to Life's Course,
Do hold this one thought:
We are made,
Each of us,
As much by what we will,
As by what we will not.