"Heroism" Are you a hero???

Do you think that you must say everything you think about? And do you think that is considered courage from you? Do you think that action is considered heroism?
Of course I agree that all our actions and behaviors are at first thoughts and ideas and every thing in the beginning was an idea.
And of course saying what you think about and expressing your opinion about all subjects around you are considered heroism.
But not all your thoughts are right and not all your thoughts you must say and express because it might be wrong and these thoughts and words may hurt someone and drive you to some…