Sex addiction is something that is frequently discussed in the media, but there is no "official diagnosis" for it in the DSM-5, our diagnostic manual. Some say this is because there is insufficient research on the topic.
The clients I've met with who have believed themselves to be "sex addicts" were actually using sex to cope with another issue. Once the other issue was identified and treated, the need to engage in the unhelpful sexual coping activity was greatly reduced. I can't promise you the same result, but I can promise to treat you respect as we work together to understand what is driving the behavior you are seeking to reduce.