What sort of year did you have at 23 or 24 years old?

I was talking to a friend the other day, and we both realised we had had quite tumultuous years at around 24 years old. We also discussed friends, and found that many of our friends also went through some difficult changes and setbacks around that age.

I remember learning in my neuroscience classes that, neurologically speaking, the brain does not finish the maturation process until 25 years of age. That has made me wonder, is this a widespread phenomenon, or just an improbable coincidence amongst my group of friends? Did you have a bad year at 23 or 24? Or was it a good year?