Harlan Coben said this quote

There are various theories about why the years seem to pass faster as you get older. The most popular is also the most obvious. As you get older, each year is a smaller percentage of your life. If you are ten years old, a year is ten percent. If you are fifty years old, a year is two percent. But she read a theory that spurned that explanation. The theory states that time passes faster when we are in a set routine, when we aren't learning anything new, when we stay stuck in a life pattern. They key to making time slow down is to have new experiences. You may joke that the week you went on vacation flew by far too quickly, but if you stop and think about it, that week actually seemed to last much longer than one involving the drudgery of your day job. You are complaining about it going away so fast because you loved it, not because it felt as though time was passing faster. If you want to slow down time, this theory holds: If you want to make the days last, do something different. Travel to exotic locales. Take a class.