Barring my faulty memory (and if I’m not lazy) I want to post prayers on Monday from all over Church History and then throughout the modern day, and then my own. This one comes from Ambrose of Milan.
O Lord, who hast mercy upon all, take away from me my sins,
and mercifully kindle in me the fire of thy Holy Spirit.
Take away from me the heart of stone,
and give me a heart of flesh,
a heart to love and adore thee,
a heart to delight in thee,
to follow and to enjoy thee,
for Christ’s sake.