Here's a great story of a guy who left the homosexual lifestyle: Confession from a former homosexual
Another option for those who feel their orientation runs too deep to change is simply to be sexually inactive. Our culture bombards us with the message that celibacy is freakish and nearly impossible, but that's not true. I have a homosexual uncle who took that route, and he's exceptionally healthy at age 85.
I worked on a unit with about 50% Lesbian staff. In the five years I was there everyone of them had a cancer of some type although none died from it. They were all in their 30-40's. Also, lots of genital Herpes in this population.