Finding My Profession. Dr. Estner’s introduction to chiropractic was at about age 16, when he suffered a lower back injury. He attended to a chiropractor and had near immediate relief of his pain. Over the next few years, he went for maintenance treatments, which continued throughout college. Following college, Dr. Estner became a commodities broker on Wall Street. Due to the high job stress level, he increased his chiropractic maintenance visits to one time per week. Realizing it was the stress of the job, he asked his chiropractor Dr. Carl Pesa for some career advice. Dr. Pesa advised him to consider leaving commodities and become a chiropractor himself.