In the video "How Emotions Work," Neuroscientist Lisa Feldman Barrett dispels common myths surrounding emotions. She challenges the notion that emotions are hardwired at birth and explains that emotions are not reactions but rather predictions created by our brains based on sensory input. Barrett emphasizes the significance of feelings, which are properties of emotional episodes, and explores how understanding these processes can aid in managing emotions and addressing conditions like depression. She encourages individuals to actively shape their experiences to alter their brain's predictions, empowering them to have more control over their emotional well-being.