REGRET is something that is in almost every character, but it's not often you see someone really use that to their advantage in the plot. The choices a character makes might backfire, or some cases the lack of making a choice leaves a character wishing they had done something. How a character handles these regrets (or lack there of) can open your mind to the complexity of their personality! For Example: A character saw a fight and could have stepped in to help, but choice not to, and something bad happened. That regret lingers. Second Example: A character loved someone, but never told them. They always wonder what might have been. What moments or decisions does your Character regret? Is there something that has stuck with them all this time? What choices DON'T they regret? Has that character ever been able to make up for it?