Talk about something you inherited. (It could be an object, a physical attribute, a belief, etc.)
There was a time when I thought the only inheritance I had from my father was the gold coin he'd sent me: the cursed Aztec gold that nearly got Elizabeth (and myself) killed. I was happy with that small gift, and I mourned its loss after the shipwreck that stranded me in Port Royal. But now I know my father is still alive, and I have something of his that's even more important. I have his knife.
It's not much, as weapons go. I've made far better in my life, but this one is his, and it means more to me now than even my finest sword. I told him when he gave it to me that I would not rest until I plunged it into the heart of Davy Jones and released him from the man's service. I know it will not be an easy promise to fulfill, but I have no intention of breaking it. I will go to the end of the earth if I must, not just to find Jack, but to finish what I set out to do. I will find that heart, and I will not abandon my father to an eternity on the Flying Dutchman. Not even if it is the last thing I do.
Some might question my devotion, considering how he once abandoned me. All I can say is that he is my father, and that is all the reason I need. I will keep that knife with me, and one day, by my hand, it will free him.