Kitty pointed me at this verse, full of good counsel about carrying out our mission in life:
ου γαρ εδωκεν ημιν ‘ο Θεος πνευμα δειλιας αλλα δυναμεως και αγαπης και σωφρονισμου
For God did not give us a spirit of timidity, but a spirit of power, of love and of self-discipline
There are three words here for the spirit God gives us:
Power (δυναμις or dynamis, from which we get "dynamic"), for with God all things are posible (Matthew 19:26). This looks forward to the task at hand.
Christian love (αγαπη or agape), as described in 1 Corinthians 13. This looks sideways to other people.
Self-discipline (σωφρονισμος or sophronismos). This word comes from the roots "sozo" (to save) and "phren" (mind). This looks inward. From what should we save our mind? From sin, from distractions, and from unnecessary self-doubts.