The older you get, the faster time flies by.
As a 10 year old, 20 seemed like a long way to go. I guess this is probably true. 10 year olds are children and 20 year olds are young adults.
At 20, 30 seemed like a really long time away. 20 felt youthful and carefree, and 30 felt serious.
Now, at 30, 40 seems closer than ever.
The funny thing is, the older I get, the longer term I plan, even when time flies by quicker.