cadence
First do you have any idea how many subs feel just that way, begging is against what we have been trained to do all our lives. Many find that being begged is embarrassing a type of manipulation by the person begging.
Second, Oz stated a an obvious truism that it seems most subs didn't "get". You stated one also that most Doms don't get. So thank you for that.
I hope that Oz and mine comments will help you to know that it isn't failure but success to beg your Dom which will please him very much and, this may shock you too, make him very proud of you and being your Dom. There is nothing else that does that quite like begging.
I have said to all of the sub/slaves that have promised themselves to me that they can get anything they want for me if they go about it correctly. The happiest ones learn that kneeling in front of me and begging sweetly for what they want would only be refused if her request was harmful to her or us.
Can you learn how to beg, yes you can everyone knows how, and begging for a climax when you know it is required is the way to start. I would advise your Master to punish you for each climax you have without permission and for that matter to refuse even the simpliest request if you don't beg him. This training should only be done in private but must be done for each of you to really be M/s.
I don't understand how the power exchange can be complete until this is done, and once you have, excuse the term, mastered it both of you will live the life you want.
Russell