The famous 20th century British evangelical preacher F. B. Meyer (1847-1929) left us a model prayer that I have found incredibly useful, especially during Lent.
Forgive me, most gracious Lord and Father, if this day I have done or said anything to increase the pain of this world. Pardon the unkind word, the impatient gesture, the hard and selfish deed, the failure to show sympathy and kindly help where I have had the opportunity, but missed it; and enable me so to live that I may daily do something to lessen the tide of human sorrow, and add to the sum of human happiness.
Too many of my words and gestures have been unkind. And I have too frequently failed to show sympathy, especially to those closest to me. I am very sure that I do not consider often enough how I can daily lessen the tide of human sorrow. May God help me during this season of repentance.