When working with any limiting belief, your goal is to get from your present state to your desired state. The first and most important step is to identify your desired state. You need to have a clear representation of your outcome. For instance, if you are in intense pain, you'll need to consider who you'll be and what you'll do in your relationships, work life, recreation, etc. when you no longer have pain. Once you've set your outcome, you've already started the change process because your brain is a cybernetic mechanism. This means that once you are clear about your goal your brain will organize your unconscious behavior to achieve it. You'll begin to automatically get self-corrective feedback to keep yourself on track toward your desired outcome.