My reflection always looks deformed and very white. Kinda scary. OT: Set up a goal and tell yourself to achieve it. Look forward to it ALOT! If the urge to accomplish the goal is bigger than the urge to continue having sex, you're good to go. It can be kinda hard though, since your most primal needs dominate in dreams. But it's worth a shot!

If you're already having lucids, I wouldn't think it's too hard for you to have them without the sex as a trigger. Only practice awareness, and think alot about Lucid Dreaming. MILD perhaps?

Good luck!