We, humans, are not good at predicting the future. We don't realize how much we'll change in time throughout our lives.
At every age, from 18 to 68 in our data set, people vastly underestimated how much change they would experience over the next 10 years.
at every age, people underestimate how much their personalities will change in the next decade.
These quotes are from the following talk: https://www.ted.com/talks/dan_gilbert_you_are_always_changing