A professor has urged teachers to give pupils the same psychology training as the US Army as it would help develop mental and emotional resilience.
Dr Martin Seligman said the "happiness lessons" should be implemented throughout the UK as they encourage development of positive emotion, engagement, relationships and achievement.
The director of the Positive Psychology Centre at Pennsylvania University, US, made the comments at the positive education summit at Wellington College, Berkshire.
The professor told the Times Educational Supplement: "The US Army wanted to create an army that was as mentally fit as it was physically fit.
"The research showed, if you have someone in the battalion who has had training in positive psychology, there is a much lower probability of soldiers developing drug problems or becoming suicidal."