Anyone who seriously seeks an answer to this question and is not just trolling or being provocative to get attention, should do a CAF search on InSearchofGrace's name. She has participated in many of the threads on homosexuality.
The most successful, long-term work in this area has been in conjunction with the Courage apostolate, and also with simply standard, traditional, very-long-term psychotherapy where the goal is not to separate the attraction from the person per se, but to uncover all the factors in his or her life that led to lifestyle results, whatever those lifestyle results were or are. That is not essentially different from the goal of standard therapy for anyone: to examine why we have made the choices to act on various impulses or to choose various paths to fill what we perceive to be our needs.
If those lifestyles are contributing to deep and true happiness, good psychotherapy will not persuade us otherwise. If, OTOH, those lifestyles are unhealthy compensations for unmet needs and are not emotionally and spiritualy fulfilling, the same excellent therapy will also uncover that. Anything in our life that has persisted for a long period of time, and to which we have accommodated, even if unhealthy, can take a lot of time & work to recognize and understand (such as a woman who accommodates to an aggressive mate, such as a family member who accommodates to a mentally ill relative).