The path through life isn’t a straight one, or a level one. It’s full of ups and downs. No two days are the same.
So when you have a day of climbing, enjoy the climb
and when you have a day of descent, take it easy, and descend carefully
you can be pretty sure, it’ll be different tomorrow……(as Heraclitus almost said, we don’t walk the exact same path twice….)
Heroes Not Zombies 
Very nice and true, each time is a different experience if we only let it happen.