Make the Lord your joy
My advice to you is to turn aside occasionally from troubled and anxious pondering on the paths you may be treading, and to travel on smoother ways where the gifts of God are serenely savored, so that the thought of him may give breathing space to you whose consciences are perplexed. I should like you to experience for yourselves the truth of the holy prophet's words: 'Make the Lord your joy and he will give you what your heart desires'. Sorrow for sin is indeed necessary, but it should not be an endless preoccupation. You must dwell also on the glad remembrance of God's loving-kindness, otherwise sadness will harden your heart and lead it deeply into despair.
Bernard of Clairvaux