Thought
When Ichigo thinks, he thinks in terms of swear words and winning streaks, in terms of names and faces, in terms of memories and remarkable skills, in terms of protecting those he loves. Kurosaki Ichigo, you'd think, would be the last person to even achieve some sort of savior complex, but then, he would never've become so strong if he hadn't had it.
When Ichigo thinks, he constantly shows a determined attitude towards any fear he may come across, and his will to live is utterly strong.
You'd think that living's a single act, taking the place of the mind and body alone, but you'd be wrong, because sometimes all it takes is a reason not to back down and to live despite what circumstances are in the way that's needed.
He thinks in terms of a hero, and you can't find a better hero than that.