Hello!
Is not dificult for me to say what makes me happy because I'm the mother of a beautiful and very active 14 months-old girl, so...
... hapiness is a smile on the face of my doughter.
... hapiness is sleeping more than 6 hours.
... hapiness is getting to go out for dinner with my husband alone.
These sayings are all very "popular statements", don't you think so?