This pattern of getting excited about something and then losing hope can be due to a number of reasons, including unrealistic expectations, lack of control over the outcome, and disappointment from past experiences. When we get excited about something, we tend to focus on the positive aspects of it and ignore potential challenges. However, when we encounter difficulties, our excitement may fade, and we may feel disappointed and hopeless. To overcome this pattern, it may help to manage your expectations, develop coping strategies for disappointment, and learn from past experiences. Additionally, seeking support from friends, family, or a mental health professional may also be beneficial.