In "The Paradox of Choice," author Barry Schwartz explores the concept of postdecision regret, which refers to the feelings of remorse that arise after a decision has been made and its consequences felt. This type of regret can lead individuals to question their choices and wonder if a different path might have yielded better outcomes.

Additionally, Schwartz introduces the idea of anticipated regret, which occurs even before making a decision. This feeling can influence people's choices, as they may fear the regret associated with potential negative outcomes, thus complicating the decision-making process. Both forms of regret highlight the emotional intricacies involved in trying to make the right choices.