Interesting that people are reporting synchronicities regarding this topic. Sex energy was something I added to my "to blog" list just last week. I had many other topics in the queue ahead of it, and when I sat down to write, this one just stood out as sexier and more attractive than the others.
My take on this topic is different than Napoleon Hill's. He writes about rechanneling sex energy into your existing work, whereas I find it more effective to alter my work to make it more "sexy" to begin with, so I'm naturally attracted to it. I think many successful people do this instinctually, whereby their businesses begin to take on qualities of a mate. Also, Hill's book is very male-biased (the nature of his time) -- I don't recall him mentioning any women in
Think and Grow Rich. But I think the idea of making your goals fit your natural attraction patterns works well for men and women.
If you've ever attended a Tony Robbins' seminar, it's obvious he injects a lot of sexuality into his work. One time he had a woman up on stage practically having an orgasm in front of the audience -- a demonstration of NLP techniques. And he constantly has audience members touching, hugging, and massaging each other. I enjoyed it, but some people feel he takes it too far.