Nudges are small changes in the environment that can influence our decisions without forcing us to choose a specific option or changing how much money we get. Research shows that different types of nudges can successfully change behavior in many areas. Nudges that automate part of decision-making tend to have a bigger impact. Future studies should focus on figuring out which nudges work best, using both real-world and lab experiments, looking at long-term effects, considering unintended consequences, and exploring how different nudges interact with other interventions.