Sometimes when we need to pray the most, we pray the least.  Communication with God is the breath of the soul.  It is availing ourselves of the very life of God.  We may not always feel the difference, but the difference is there.   We must get beyond praying only when we feel like it.  Something is trained and changed in our inner being by prayer.  It shifts our center of gravity.  It orients temporal life to the Eternal God.

“Now He was telling them a parable to show that at all times they ought to pray and not to lose heart.” Luke 18:1 (NASB)