You have problem of anxiety and impulse control. Both of these could be a part of your personality. Consultation with psychiatrist will definitely help you but at present if you are not able to go for that, then try to follow this. Start learning relaxation exercises like Progressive Muscle Relaxation, Shabasan etc. Do physical exercises, including aerobics. Breathing exercises and Pranayams can also help you. Self-Hypnosis can also help. If you do not have any one to teach you these methods, do write back; I can send you these exercises.