Fool's Paradise Day

This Shakespearean term means that someone is in a state of happiness based on false hope, but everyone can use a little false hope every now and then!
The phrase dates back centuries, when the first recorded example is found in the Paston Letters of 1462. Shakespeare later used it in Romeo and Juliet, 1592. Today is 'Fool's Paradise Day,' and maybe the most fun part can be thinking up what improbable set of circumstances you want to celebrate.