The book of life

The time has come to turn a page.
The book of our reality
Demands it at a certain age;
It's just a technicality.

The story started long ago,
With high and low points on the way,
Some chapters fast, some chapters slow;
It still goes on, and that's okay.

Attention matters most of all;
The plot's a mystic, tangled text,
Its twists and turns too hard to call.
Just turn a page, and see what's next.