Who cares? We will all die in the end, so eat that cake.
Sing loud and wrong. 
Stay up late.
Tell people you love them and expect nothing in return. 
Be kind. Don't spent your little time being miserable and making other people's lives miserable. Some time soon we're all dust in the wind. 
So lit the candle you're keeping for that special occasion. Wear the good shoes. Compliment a stranger. 
Life is temporary!