One potential drawback or criticism of solely focusing on positive psychology is the risk of overlooking or minimizing legitimate struggles and challenges that individuals may face. By exclusively promoting positivity and gratitude without addressing underlying issues or negative emotions, there is a concern that it could lead to a superficial approach to mental health. Additionally, some critics argue that an overemphasis on positivity may create unrealistic expectations for individuals to always be happy, potentially invalidating their genuine feelings of sadness or distress.