Parachute?

Sometimes reaching the top isn't enough.

Staying there for period of time and then falling back a bit is disheartening.

Sometimes the way down is like falling into an abyss, with no one there to catch you.

It's even worse when you reached the top and didn't even realize it until that fall begins.

Then you suddenly come awake and realize it on the way down.

As the old song goes:"Don't it always seem to go that you don't know what you got 'til it's gone..."