Because you like Mark Watney in The Martian

The brilliant and well-adjusted Ender Wiggin is being groomed for the next generation of military leaders to fight alien invaders. See them in Ender's Game.

There must be quite a lot of fellows who haven't got anybody to bring them tea in the morning. Bertie Wooster is lucky to have his valet, Jeeves. See them in Jeeves and Wooster.

Stuck on a lifeboat with zoo animals without food and fresh water, Pi Patel uses his intelligence to face the greatest test of all: survival. See them in Life of Pi.

Cooper says he used to look up at the sky and wonder at our place in the stars, but now he looks down and worry about our place in the dirt. See them in Interstellar.

A ruthless militant, Raza will do anything to take down Tony Stark. See them in Marvel Cinematic Universe.

Brian Robeson is a true survivor through and through. See them in Hatchet.

Eragon is one part brave but three parts fool. See them in Eragon.

Ishmael is a quiet observer on a larger-than-life quest. See them in Moby Dick.

With an undeniable sense of adventure, Huck Finn is an expert at getting into and, more importantly, out of sticky situations. See them in The Adventures of Huckleberry Finn.

Curiosity and compassion aren't always to Jonas' advantage. See them in The Giver.

A responsible kid, Hugo Cabret is still capable of flights of fancy. See them in Hugo.

Tony Mendez is quietly determined and creatively resourceful. See them in Argo.