1. The Lies We Tell Ourselves
Cognitive Dissonance
The Lies We Tell Ourselves

2. Cognitive dissonance is the term coined by psychologist Leon Festinger in 1954 to describe “the feeling of psychological discomfort produced by the combined presence of two thoughts that do not follow from one another."
The greater the discomfort, the greater the desire to reduce the dissonance of the two cognitive elements.
Dissonance theory suggests that if individuals act in ways that contradict their beliefs, then they typically will change their beliefs to align with their actions (or vice-a-versa).

3. The Fox and the Grapes
ONE hot summer’s day a Fox was strolling through an orchard till he came to a bunch of Grapes just ripening on a vine which had been trained over a lofty branch. “Just the things to quench my thirst,” quoth he. Drawing back a few paces, he took a run and a jump, and just missed the bunch. Turning round again with a One, Two, Three, he jumped up, but with no greater success. Again and again he tried after the tempting morsel, but at last had to give it up, and walked away with his nose in the air, saying: “I am sure they are sour.”         “IT IS EASY TO DESPISE WHAT YOU CANNOT GET.”
Aesop's Fables
The fox is unable to reach the grapes, and, experiencing cognitive dissonance, reduces that dissonance by believing the grapes are sour. This example follows a pattern: one desires something, finds it unattainable, and reduces one's dissonance by criticizing it.

4. Stop Smoking!
Another example can be seen in many people’s continuing to smoke two or three packs of cigarettes a day, even though research shows they are shortening their own lives. They answer this cognitive dissonance with thoughts like, “Well, I’ve tried to quit and it’s just too hard,” or “It’s not as bad as they say and besides, I really enjoy smoking.” Daily smokers justify their behaviors through rationalizations or denial, just as most people do when faced with cognitive dissonance.
Not everyone feels cognitive dissonance to the same degree. People with a higher need for consistency and certainty in their lives usually feel the effects of cognitive dissonance more than those who have a lesser need for such consistency.

5. Cognitive-dissonance is just one of many biases  that work in our everyday lives.
We don’t like to believe that we may be wrong, so we may limit our intake of new information or thinking about things in ways that don’t fit within our pre-existing beliefs. Psychologists call this “confirmation bias.”
We also don’t like to second-guess our choices, even if later they are proven wrong or unwise. By second-guessing ourselves, we suggest we may not be as wise or as right as we’ve led ourselves to believe. This may lead us to commit to a particular course of action and become insensitive to and reject alternative, perhaps better, courses that come to light. That’s why many people seek to avoid or minimize regret in their lives, and seek “closure” — imposing a definitive end to an event or relationship. It reduces the possibility of future cognitive dissonance.

6. So what can I do about Cognitive Dissonance?
Self-awareness seems to be a key to understanding how and when cognitive dissonance may play a role in your life. If you find yourself justifying or rationalizing decisions or behaviors that you’re not quite clear you firmly believe in, that might be a sign that cognitive dissonance is at work. If your explanation for something is, “Well, that’s the way I’ve always done it or thought about it,” that may also be a sign. Socrates extolled that “An unexamined life is not worth living.” In other words, challenge and be skeptical of such answers if you find yourself falling back on them.