Transition into professional development

Q: I’ve been a practicing litigator for 10 years and have done some personal/life coaching on the side for the past 2 years.  I very much want to transition into professional development at a firm and, although I have had some great feedback, it comes down to the old conundrum:  I don’t have experience and I can’t GET experience.  Is there a certification program etc… that would be helpful/useful?