Guy Winch argues that we need to practice emotional first aid to treat psychological injuries like failure, rejection, and loneliness. While we prioritize physical health, we neglect our psychological health even though emotional wounds can have major impacts on our lives. We should treat psychological injuries with the same care and techniques as physical ones. Practicing emotional hygiene through addressing negative thinking, protecting self-esteem, and responding helpfully to difficulties can help us heal wounds and build resilience.