A breif and beautiful traditional prayer:
Immeasurable love: To wish all beings be happy and have the cause of happiness.
Immeasurable compassion: All beings to be free from sufferings and the cause of sufferings.
Immeasurable joy: If beings are happy and joyful, wish them they never loss the joy.
Immeasurable equanimity: Wishing that all beings do not feel prejudice from someone.
Love it... Awesome !!! :)