This YouTube video, taken from a TED Talk of Daniel Pink is definitely worth watching because it talks about different ways people are motivated and how we as human respond to incentives. We are all driven by intrinsic and extrinsic motivation. We respond to different types of reinforcement wither at work or daily life namely positive reinforcement, negative reinforcement, punishment and extinction. The video further looks into interesting researches and surveys on motivation.The Surprising Truth about What Motivates Us