A hero to me is selfless, foremost, but selflessness doesn't have the same impact when there's no risk involved with the hero's life. My protagonist is mortal, bleeds like every man, and has a tragedy propelled story. There's a very real emotion the comes from a father/child relationship, not to mention family. I took that and put a spin on it. Instead of revenge for those who killed his family/child, he's actually the one more responsible than any. He falls asleep at the wheel with his son in the passenger seat which results in a wreck, claiming his child's life.
At that point, who do you blame but yourself? Subsequently his marriage dissolves and any contemporary life he had, is lost.
The sci-fi/western genre serves second hand to this cataclysmic event. His life crumbles, he abuses alcohol, and becomes utterly depressed. All that remains is his job as a firefighter. One night after being told of his removal from "active duty" a call for a chemical fire at a cryonics lab interrupts his conversation with the crew chief. Later, after rescuing a scientist who's a leading researcher in the field of nanotechnology, he's blinded by a burst chemical valve. The scientist feels indebted, offers to give him his sight back, but there's a catch. He'll have to undergo hundreds of years of cryonic stasis till the time when this nanotechnology is ready. Again, with nothing tying him to his current life, he accepts and is "happy" to do so.
Then I create the setting as a postwar Sol system 300 years later. A powerful company had been subsidized by the U.N. Resource Committee which privatizes space exploration. They'd set up colonies on terraformed planets, space stations, hollowed asteroids, you get the picture. Meanwhile, Earth's consumed by a global civil war and a resource crisis. There's not enough food, water, or energy to go around. The planets "overpopulated". This "Company" tries to take over Earth, sends it into a modern dark age with NNEMP weapons and destroys every governmental and economic entity making the them sole might over humanity. A resistance pushes them back, but the damage is done. Billions make up the death totals, everything's war torn, and futuristic items have been absent knowledgeable people to maintain them and have rotted to decay.
I tired to create a future that's a "survival of the fittest". There's no law, no government, basically no infrastructure. Now, my protagonist is set to enter the story once again. Gains his eyesight back, but it's much more advanced. Allow me to explain.
There's a time-lapse between what you see, ear, ect; and what your brain does with that sensory information "interacts". Likewise, your eyes see in frame-rates of milliseconds. Ever watched a speeding car go by like a blur? Well, it wasn't that the car was too fast for you to see. It was blurred because your eyes couldn't keep up with how fast it was going. It was "skipping frames". Imagine what it would be/feel like if a nanotechnology refurbished your cell tissue, along with essential cortices in your brain, and quickened what would take milliseconds to nanoseconds. You'd be able to see that car go by as if it were parked in front of you.
This is all of course a rough outline. I'm currently working on the 2nd draft of the first book. There's four total in the series. I've got the rough and 1st drafts of the second book finished as well, and have conceptualized the third and forth.