Youth does not last
Your clocks ticking, its ticking fast
Before you know it, life will pass you by
Make most of your life, never deny

What your heart wants, what it needs
In your lifetime your heart will bleed
So enjoy every minute you have left
Make life worth wild, make it well spent

you cannot reverse the time you have lost
make your life what you want it to, make it worth the cost

Crazy Vampire

http://www.poemhunter.com/poem/a-life-worth-living-for/