" In short, these findings suggest that when we are in the midst of a task, we focus on the inherent joy of the task, but when we think about the same task in advance, we overfocus on the extrinsic motivators, such as payment and bonuses. This is why we are not good predictors of what will motivate us and what will crush our motivation. This "

― Dan Ariely , Payoff: The Hidden Logic That Shapes Our Motivations