"I suffer from insomnia, a lump near my sternum that takes up all the space, constantly thirsty but I can't seem to hydrate myself, panic attacks."

It seems like you are experiencing symptoms of stress and anxiety, particularly related to performance anxiety. It's important to pay attention to your negative thoughts and try to challenge them, be mindful of your caffeine intake as it can worsen anxiety, practice deep breathing to calm your nervous system, and engage in physical activity to help regulate your body and mind. If your anxiety is significantly impacting your daily functioning, it may be helpful to seek support from a mental health professional for further evaluation and guidance. Remember that it's normal to experience anxiety, but it's important to address it if it becomes overwhelming.