Identifying Bipolar Disorder Symptoms

John is a 30-year-old man who has noticed a significant change in his mood over the past few months. He feels extremely energetic, often staying up all night, and he engages in activities that lead to impulsive decisions, such as spending excessively and taking unnecessary risks. John has difficulty concentrating and rarely feels tired. These symptoms have raised concerns for his friends and family. Based on this description, which psychological disorder is John most likely experiencing?