That's too bad that you haven't read any stories or seen any movies.
You may have to use a TV show you've seen.
You could always use a Disney classic. I'm sure a bunch of people have seen/heard of Disney movies, right?
Here's an example: The Lion King.
Many bad things happened to Simba; his father died, his uncle tricked and tried to kill him, etc. But he met friends that changed him (Timon and Pumbaa) and helped him grow, and when his friend, Nala found him, she helped him see that he was needed back in the Pride Lands. He didn't really keep "giving up", but he DID keep trying to push the thought of going back to the Pride Lands away, as he was afraid. Though, in the end, he did wind up facing his uncle and beating him, claiming his rightful place as king.
Anyways, that's just an example. You can go online and research a story like The Lion King and read a summery to get a better idea...
Good luck! :)
While they are very violent and gory, The main character of the Ailen movies: Riply, survives over and over. Even when she dies, she wins, and then the company has her cloned, and she survives their stupidity again. Generally, her survival results from logical assessment of the situation and doing whatever she needs to do, even when almost no one else is. These movies are rated R PLEASE do not watch them if you are too young, they are nightmares on film! Adults only!
In real life there is ~The Courageous Heart of Irena Sendler~. She is one of my heroes.
Oh okay. I'll just use Abraham Lincoln Vampire Slayer xD