You’re really pissed at someone. Like, beyond angry. And the way you feel is totally justified, given what that person did.

The mantra that so often follows a frustrating or upsetting incident is “forgive and forget.” But British writer Sophie Hannah, known as the novelist who has continued Agatha Christie’s ...

According to Professor Brett Kahr of the Tavistock Institute, a grudge is not a psychology catalogue item: it's not an illness, but a state of mind – "a powerful welling up of a rather annoying ...