If your memory starts to fade, a familiar song or an old photograph can help bring those memories back to the surface. In fact, Alzheimer's patients and their families often use nostalgia as a way to trigger buried memories and regain a sense of self.The best way to keep calm and carry on is by reminding yourself of past experiences where things worked out despite hardships. This nostalgia helps you maintain a positive attitude in the face of adversity, allowing you to turn stressful situations into fun learning experiences.