POSITIVE PSYCHOLOGY The business traveller is at greater risk than most of stress, fatigue, depression and burnout. A 2016 Booking.com survey of 4,555 frequent flyers found that 93 per cent were wrung-out by business travel. In 2017, positive psychology – essentially the science of happiness – will be a popular buzz phrase of the moment. Gaining an understanding of our own mental health can help us to make better life choices. Thinking positively can even improve our physical health – last year, a study of 70,000 women in the American Journal of Epidemiology found that optimists were less likely to get fatal cancer, heart disease, lung conditions or stroke in retirement.