For more inspiration - read the story of Antarctic explorer, Douglas Mawson.

This poem inspired him to stay alive (when the bottom skin of his feet had frozen off)--and he found himself hanging in an ice crevasse:

http://www.internal.org/Robert_W_Service/The_Quitter

The Quitter
by Robert W. Service

When you're lost in the Wild, 
and you're scared as a child, 
And Death looks you bang in the eye, 
And you're sore as a boil, 
it's according to Hoyle 
To cock your revolver and . . . die. 
But the Code of a Man says: 
"Fight all you can," 
And self-dissolution is barred. 

In hunger and woe, 
oh, it's easy to blow . . . 
It's the hell-served-for-breakfast that's hard. 
"You're sick of the game!" 
Well, now, that's a shame. 
You're young and you're brave and you're bright. 
"You've had a raw deal!" 
I know -- but don't squeal, 
Buck up, do your damnedest, and fight. 

It's the plugging away that will win you the day, 
So don't be a piker, old pard! 
Just draw on your grit; it's so easy to quit: 
It's the keeping-your-chin-up that's hard. 
It's easy to cry that you're beaten -- and die; 
It's easy to crawfish and crawl; 
But to fight and to fight when hope's out of sight -- 
Why, that's the best game of them all! 

And though you come out of each grueling bout, 
All broken and beaten and scarred, 
Just have one more try -- it's dead easy to die, 
It's the keeping-on-living that's hard.