If someone wanna succeed, why does he afraid of failure?

In my last year in senior high, there are many university admission tests. Some students passed in those tests, the other didn’t. there were some friends took it easy when they failed, the other didn’t. the ones who didn’t looked very disappointed, or I can say they depressed

I wonder why they become that really disappointed. Why don’t they make that failure become their strength to pass in next test? There are still many chances that we can take. Do our best in next test! Fail again? So that’s not d best university for u. that’s how we should face d failure.

In a forum, someone said that our life is like a film and we are the heroes in that film. In film, the heroes don’t succeed once they tried. If they do, so d film won’t be interesting anymore! Like in a film, we’ll get many failures in our try. Believe that in the end, if we don’t give up, we’ll succeed. We are the heroes in our lfe. Just don’t give up and keep doing our best. Like what Miley Cyrus said in her song titled "The Climb":

I can almost see it
That dream I'm dreamin' but
there's a voice inside my head sayin' you'll never reach it
Every step I'm taking
Every move I make feels lost with no direction
My faith is shakin but I
I gotta keep tryin
Gotta keep my head held high

there's always gonna be another mountain
I'm always gonna wanna make it move
Always gonna be an uphill battle
Sometimes I'm gonna have to lose
ain't about how fast I get there
ain't about what's waitin' on the other side
it's the Climb

The struggles I'm facing
The chances I'm taking
Sometimes might knock me down but
No I'm not breaking
I may not know it
but these are the moments that
I gotta remember most yeah
Just gotta keep going and I
I gotta be strong
Just keep pushing on