I saw this chart on Visual News that outlines the span of the modern human life in weeks, represented by single blocks. The major milestones and time periods are also highlighted.
Seeing the limited nature of our mortal existence helps wake us up to the importance of treasuring each moment that we get to experience. This is not a practice run- we only get one chance to live this life.
Our seconds, days, weeks, and years are counting down, right now... how are we going to make the most of it?
Wait but Why:
(click to enlarge)