Im not a Christian, but I have used this quote tought by my Christian friend for 20 over years..
"Father, forgive them, for they know not what they do".
This after the friend saw me cursing almost everything that I encounter with.. but to a very surprise upliftment, the quote make me to feel ease of myself, happiness were found n this become part and parcel of my life now, literally I forgive everyone n be happy always now, thanks to Lord Jesus.. :-)