Back pain is a problem for many and it has many causes. Treatment and prognosis depend on the diagnosis and cause of pain. Have you had any testing done? If more serious causes of back pain have been ruled out, most of the time, chronic pain, (which is pain lasting over 3 months) is due to a 'mechanical' issue. This simply means it is a result of soft tissue that is under stress or strain due to postural changes, alignment or structural changes in the spine or pelvis combined with muscular weakness or tightness. An individual examination would reveal which tissues are tight, which have become weak or non-supportive and whether or not you have a malalignment of the spine or pelvis that requires correction. Often times, even if there was a precipitating injury or event that 'caused' the pain, the brain is still receiving signals that there is an injury. I would suggest seeing a Physical therapist in your area, for an evaluation and once the underlying factors have been determined they can provide you with an exercise program tailored to your unique and individual needs. Exercise is an effective way to manage chronic pain and get you back to an active life.