Prayer under grace and by grace

Don't give up in despair if no thoughts and no words come [in prayer], but only distractions and inward confusion. Often it helps to use the words of other...Psalm, hymn, song--use what helps most. And if the day ends in what seems a failure, don't fret. Tell Him you're sorry. Even so don't be discouraged. All discouragement is of the devil. – Amy Carmichael