Addressing Emotional Investing through Behavioral Finance Techniques

John is a financial advisor working with high-net-worth clients. He has recently read about various behavioral biases that might affect his clients' investment decisions. One particular client, Lisa, has a tendency to become emotional about her investments, often selling during market downturns and missing out on subsequent rebounds. John believes that understanding these behavioral biases can help him advise Lisa better.

To address Lisa's emotional decision-making and help her develop a more rational investment strategy, John decides to implement specific behavioral finance techniques. Which of the following options should John consider as a practical application to address Lisa's issues with emotional investing?