This is a very unfortunate problem to be dealing with all of these years later, and it is obviously affecting your quality of life. At this time, given the strong emotional response that you exhibit in your question, you need to speak to a doctor about your problem. Likely the best place to start is your primary care doctor
, but he or she will probably end up referring you to either a neurologist
, or else skipping that step and moving directly to a thoracic surgeon
Your primary care doctor might feel comfortable starting some different medications that can help your body to not sweat as much, but alternatively he might feel that a neurologist would be the best bet given that some of the commonly used medications have many side effects. Ultimately, there is potential that you might be referred to a thoracic surgeon. He or she would be able to offer you the alternative of a sympathectomy, which is a relatively simple procedure during which some of the nerves that innervate the sweat glands of your hands are destroyed. This causes them to not function, which helps many people to have decreased sweating in their hands.
When a problem is causing you this much anxiety, it is something that should be addressed. Please start by talking to your doctor or a neurologist (nerve specialist doctor).