Fasting from words, fasting from a volume of speech, being willing to humbly accept the yoke of silence and quietude deprives the tongue of the mastery of our hearts and minds. The tongue is a very useful tool for the art of love and for the art of prayer, but it is also the means by which we afflict others and even our own selves so often. So it must be called into holy obedience.
The lesson which life repeats and constantly enforces is "look under foot." You are always nearer the divine and the true sources of your power than you think. The lure of the distant and difficult is deceptive. The great opportunity is where you are. Do not despise your own home and hour. Every place is under the stars, every place is of the world.