Energy.

There is only a single, urgent task: to attach oneself someplace to nature, to that which is strong, striving and bright with unreserved readiness, and then to move forward in one’s efforts without any calculation or guile, even when engaged in the most trivial and mundane activities. Each time we thus reach out with joy, each time we cast our view toward distances that have not yet been touched, we transform not only the present moment and the one following but also alter the past within us, weave it into the pattern of our existence, and dissolve the foreign body of pain whose exact composition we ultimately do not know. Just as we do not know how much vital energy this foreign body, once it has been thus dissolved, might impart to our bloodstream!

Rainer Maria Rilke