You don't have perfect judgment, so tell your older friends what you think. Let them help you.
In addition, having interests outside of study can make people psychologically healthier, such as calligraphy, art, music, reading, writing, sports and so on. When you are bored, don't do something that you will feel guilty about. Force yourself to start doing these interests mentioned above, and you will be cured.
Cheerful, optimistic, smile more!