How does your jumper define their “self”?

What characteristics, facts, or anchors does your jumper use to identify who they truly are and what their actual self is? For instance, part of Batman’s self is his anchor to his parents’ death. Without it, he probably would not have had a grudge against crime in Gotham. Another example is the rabbit in Alice in Wonderland, with its characteristic of always being late a factor of its self.