Why can you not orgasm at all? Are you on medicine? I bet it's a side effect due to medication. Is there a reason? Have you spoken to the doctor about this? I could help advise you how to improve yourself but I don't know how to help you in this area? Perhaps try to focus more on yourself and maybe appreciate what you have. Why do you stop feeling not good? Maybe you not paying attention what you are doing or do you feel weird doing it? What is making you feel like you had to stop? May I ask how old you are? Maybe age has something to do with it?