We share memories of the past for many reasons. By telling a sad or difficult story – perhaps a fond memory of someone we have lost since last Christmas – we strengthen shared connections, offer sympathy and elicit support.

By telling a funny or embarrassing story – perhaps the time the dog stole the Christmas ham – we share feelings of joy or recognition of difficulties overcome, large or small. By sharing similar or not-so-similar experiences, we empathise with and understand one another better.

Source:  The Conversation