I think that my biggest obstacle in karezza will be learning how to stop without giving my wife an orgasm
To put in bluntly, I am a sexual pleaser. When I make love with my wife I focus on giving her a wonderful experience. It becomes all about her having the big O so that I can feel that I was a good lover. Two years ago I self-diagnosed myself with the Nice Guy syndrome. Being a manically selfless lover is one of the most common traps for nice guys. It may be a challenge to overcome this.
In all honesty, I do not think it will be a problem to stop before I orgasm. The bigger problem will be to stop without giving her an orgasm. Some part of me will be unhappy that she did not get the full "experience". I guess I will just have to trust that she will still enjoy it without the O. Having read the book, I now know that orgasms have a cost. Now I just need to convince myself that the cost is not worth the thrill of being a skilled lover who consistently takes his woman over the edge.