It's all a matter of perception. That is, I think it seems that way. I'm 68, and yes, time really does seem to be speeding past me at an alarming rate--mostly. Though, there are times (like when I'm in the dentist's chair, LOL), that it just crawls....
well you have to really think about it. i mean when you were younger you didnt really know much about time. and also, what did you spend most of your time doing? when youre young you spend most of your time doing youthful things. when youre older you start working and you realize you dont have much time for everything that you want to have time for. plus, do you still wait for the presents and candy and whatnot for christmas morning every christmas eve night AS MUCH AS you did when you were younger? dude, waiting makes time go by so slow! lol
my math teacher told me that it was because its such a small fraction of your life then it was before .so when you are 20 a year is just part of another 19 but when you were 10 one year is just part of another nine. I hope what i just said made sense because i couldn't think of any other way to put it:/
When you are young your brain is new at interpreting and storing information, as you age your brain becomes more efficient and requires less time on trivial tasks. This relates to the sense of "time flying by" A good trick to slow is 1) keep a calendar on your fridge. 2) put clocks above your TV, computer and anywhere else you spend time. This will cause your brain to continually register this information and give the impression of slowing time. "Carpa Diem"