Fifteen years is not long in the context of being sixty, but it's still one quarter of the life you have known.
But think how long childhood lasted. The seven years I spent at Grammar School was a lifetime.
I have a theory. When you're five, each year is a fifth of your entire life so each year passes slowly.
At sixty, each year is one sixtieth of your entire life so seems to pass much faster. But the reality is the time is the same and in the context of a teenager, fifteen years is a lifetime.
So lets look forward to the next fifteen years!!!!!!!