Americans take fewer vacations than we used to, and many people don’t have paid time off. That means it’s important to savor the vacations we do take. …“Anticipation is a free source of pleasure,” said Elizabeth Dunn, a psychology professor at the University of British Columbia who studies happiness. “I happen to have time to do it now, and it actually is very pleasurable to me,” Dunn said. …“A moment of awe makes you feel less lonely, it makes you feel more connected, it makes you feel less stressed,” said Dacher Keltner in an interview with The Post last fall.