What is the optimism bias? This is overestimating the good things that will happen in your future, despite all the evidence that may go against it. This is a systematic mistake that we all make as we always expect the future to be better than it ends up being and we underestimate the negatives that could happen. However, in this moment Dr. Tali Sharot discusses how the optimism bias can be a positive as our expectations of future happiness affect our happiness right now, it can motivate you to try harder to make this a reality. As Dr. Sharot says, "what we believe in our mind, changes the way we behave and the way we behave in the world changes the world"