Walid has been working 70-hour workweeks and has been getting his days and nights mixed up, as well as having trouble separating his dreams from reality. Just yesterday, he thought a project had been completed, but it was only a dream. This problem is known as:

In a study, people were asked to imagine simple occasions that made them happy and to remember events that made them feel proud about themselves. it was observed that the subjects developed an increasingly positive attitude. these changes are known to be healthy, leading to greater physical activity and reducing unhealthy habits. based on this excerpt, we can conclude that a positive attitude .