Many of us wear our "I'm a procrastinator!" buttons with pride and laughter. In reality, it is nothing to laugh at.
Procrastination is a response to fear.
Therefore, to overcome it you must ask yourself, "what do I fear related to the procrastination?" If you are holding off your step work - what is it you fear? Admitting that you have an addiction? Looking at your relationship with your Higher Power? making amends? Success?
You'd be surprised how often people are afraid of success. Once you identify your fear you can take steps to get through it and get the job done.