Throughout life we will have periods of great consolation in prayer as well as times of extreme dryness.
It is during the dry periods that we will be tempted to doubt in God's goodness or in his presence in our lives.
Dryness in prayer is often a test that God allows to see how we respond and if we are able to persevere.
Experiment during prayer
St. Francis de Sales encourages the reader in his Introduction to the Devout Life to experiment during periods of dryness, to see if a different form of prayer will bring consolation.
He provides four practical things to try out and that may provide some respite.
1Read a spiritual book
[Y]ou can take a book, and read attentively till such time as your mind is calmed and quickened.
2Prostrate yourself on the ground
[S]ometimes you may find help from external actions, such as prostrating yourself.
3Fold your hands over your chest
[Or] folding your hands upon your breast.
4Kiss your crucifix
[Or] kissing your Crucifix.
The key is to not become disheartened and to be patient:
But if, after all this, you are still unrelieved, do not be disturbed at your dryness, however great it be, but continue striving after a devout attitude in God’s Sight. What numbers of courtiers appear a hundred times at court without any hope of a word from their king, but merely to pay their homage and be seen of him. Just so, my daughter, we ought to enter upon mental prayer purely to fulfil our duty and testify our loyalty.
