Negative emotions like fear or anger are part of being human. These feelings tell us something - perhaps prompting us to take action or bring about change. However, they're powerful and disruptive - and if they hang around too long or are too intense, they can take a huge toll on our happiness and wellbeing. We need to shift them... but how?

Psychologist Ethan Kross knows.

He's the author of Shift: Managing Your Emotions So They Don't Manage You and founder of the Emotion and Self Control Lab at the University of Michigan - and shares his top science-backed tips to rein in feelings like sorrow, disappointment or rage.