Life is a series of unexpected and expected experiences. Life is a cartoon. Life is what you make of it. Life is a journey whose destination is unknown. Life is a treasure and the proof of that is that few people want to die.
Life is hard but beautiful, too.
Life is a very high mountain. Life is a film in which you are the main character. You could even devote a whole class to discussing student comments. Working and family. Freedom from work and family.