The phrase "the right thing" refers to an action or decision that is considered morally correct, fair, and in line with accepted standards of behavior. It implies doing what is just, honorable, and appropriate in a given situation, even if it requires personal sacrifice or goes against one's self-interest. The concept of "the right thing" varies depending on the context and cultural norms but generally refers to an action that upholds principles such as honesty, integrity, fairness, and respect for others.