Self-deception is the process of convincing oneself of a truth or reality that is not accurate. It often involves ignoring or rationalizing evidence that contradicts one's beliefs or actions. This psychological phenomenon can lead individuals to maintain a false sense of security or justify poor decisions, impacting their ability to make rational choices. People engage in self-deception for various reasons, including protecting their self-esteem or avoiding uncomfortable emotions. It can manifest in everyday situations, such as relationships or work, where individuals may overlook flaws or challenges to maintain a positive outlook. Understanding self-deception can help individuals recognize and address their biases.