What does it mean you feel like a heel?

Feeling like a heel means you feel remorseful or guilty about your actions, often because you've acted selfishly or hurt someone else. The term "heel" is derived from the idea of being low or contemptible, suggesting that you recognize your wrongdoing and may feel ashamed of your behavior. It's a way of expressing self-reproach or regret for not living up to one's own moral standards.