J.L. Campbell set the challenge to write about your hero in 300 words or less. I have three people who would fit into this category. Two of them are fictional. Let's see if I can get all three in under the word count. Time starts... now.
Most people find Superman boring, but I think his story is fascinating. He's a person who can do anything. He has the task of leading all of humanity into a bright new future. He's completely invincible. And yet, he has some very human weaknesses. He's unsure of himself and his abilities. The task of saving everyone is a huge emotional strain. If he didn't have Lois by his side for support, he'd break down and die. His arch-nemesis isn't an alien or a superhero - just a corrupt businessman. And interestingly, his one real weakness (kryptonite) is something that's completely harmless to the rest of us. Superman wants to save the whole world, and that's why I want to be like him.
The second one is darker, but no less important. Dean from Supernatural has been through unimaginable horrors in his life (seriously, look up the storylines). He's been to Hell, watched everyone around him die horribly, been manipulated by angels... He believes that when it finally ends for him, it'll be bloody and painful. He hates himself and thinks people are better off without him. And yet, the only thing he can think to do is keep going. Every morning, he wakes up and just keeps doing what he can to save the world. To him, giving up just seems like a pointless option. I admire that inability to give up.
The Buttercup Gang
This is the real one. The people in this group have provided me with all sorts of emotional support and personal growth. They're the most fun, interesting and supportive people I know. Just being out in public with these guys, I notice people around us smile and laugh. They're my group of Lois Lanes and life would be a lot harder without them.