Personally I believe a hero is one who puts their life on the line for others. Or does all for the the sake of friends.
Some people I believe to be heros are Harriet Tubman, George Washington, Iron man, and even Odysseus.
I Odysseus, know that I was a hero during the interaction with the cyclops. I demonstrated my heroism when I chose to be the only person one sheep to use. This shows that I put my life on the line for the sake of my comrades.
I Odysseus, also know that I was a hero when we had interaction with Circes. I know this because regardless of what would happen, I ran across the island to rescue my crew from Circe. This shows that I am a hero because I once again put my life on the line for others.
The last time I know I was a hero was during the meeting with the Lotus Eaters. I alone took the effort to retrieve my men from desertion. I know this makes me a hero because what I did was for the sake of others. However, this was against the wishes of the crew.
Sure, I admit that everything was 100% my fault, but as a hero I still believe I was a hero. I think this because I tried very hard to fix my mistakes and errors. All in all, I believe I was a man eligible of the title "Hero."