You could be suffering from borderline. I can relate to the mood swings. Craving attention to feel some emptiness. Lots of unregulated emmotions, spewing all over the place. I don't think you are crazy, but you are in pain and could use some help. Do you have anyone you trust that you can talk to?

There is help out there for you to be able to control your emmotions and find some balance. A lot of people that suffer from BPD go thru DBT. It is a type of therapy to help regulate emmotions and not have to suffer so much. Can you go to hour parents to get them to get you some help? Maybe school counselor? If you are feeling suicidal you can call 911 or go to the hospital and get treatment. Your not crazy, just suffering from things you can't cope with.