Duties to Clients: Ethical Decision-Making in Client Portfolio Management

Your role as a financial advisor involves managing client portfolios and making investment decisions on their behalf. Recently, one of your clients, Mr. Johnson, has expressed dissatisfaction with the performance of his portfolio, which reflects a conservative investment strategy. He is now pushing for a more aggressive investment approach despite your advice against such changes due to his risk tolerance and investment goals.

Discuss your ethical responsibilities in this scenario, particularly focusing on your duty to your client. What should you do to uphold these responsibilities while considering Mr. Johnson's wishes?