No, hon. You're not crazy.
You're just overwhelmed by your life's experiences and have no outlet for your emotions.
I think it would be a good idea for you to perhaps find a professional therapist to talk to, if you are willing to do so.
A good therapist can help you discover the underlying causes for your emotions and also help you learn how to deal with them - so that you will no longer feel the torment and anguish you seem to be feeling right now.
Please think about it, won't you?