1. Encourage impoverished nations to use contraceptives
2. Encourage people to use critical thinking skills and to read up on science as much as they can
3. Make it a rule that any priest even remotely accused of raping kids is automatically excommunicated and will be sent down to burn inside Satan's asshole when they die
4. Wait a few years for the effects of my teachings to occur
5. Step down and tell everyone I was an atheist the whole time
6. Wait until the next pope is elected and tries reversing everything I said and gets a bunch of shit for it because what I've done has had a positive influence on the world.
7. Grab some popcorn as the Catholic Church's reputation plummets to an all time low.