It's a bit unorthodox (both in terms of the standard medical birth prep world and the more crunchy natural birth prep world) but the OBs who attended my first VBAC had an interesting philosophy that they shared with their VBAC mamas...
Basically, they felt like a lot of VBAC mothers spend too much time in their heads. They understood that this sort of obsessive analyzing was normal, that it was important for VBAC mamas to process their past births and dig deep into the whole world of VBAC stats and stories and figures and risks and ruptures and rules and "how to do it right THIS time when you did it all right LAST time and it didn't work" stuff. The really encouraged moms to spend time processing and thinking and reading all the studies and doing that sort of "in the head" work. But only in the first half of the pregnancy. More or less for the entire third trimester they asked VBAC mamas to commit to being "in their bodies"... do yoga or belly dance or sing out loud as much as possible, garden or sit outside with your hands in the dirt, go swimming or hiking or camping, build things, have sex, get a body rub or massage, do moving meditations or finger paint your birth art, and just connect physically with the whole earth mama/birthing energy. Spend the first part of the pregnancy coming to terms with the "-ac" part of "vbac" and then the second half of pregnancy focused on the "vb-" part.
They even write Rx for that sort of stuff during the third trimester. You know, "take 5 deep breaths outside, three times daily". LOL (they do something similar for moms who are giving birth following sexual abuse and trauma, again with the goal of moving women out of their heads where everything is percentage of this and fear of that and into their bodies where the birth actually happens).
~~(my first VBAC was attended by Drs Heidi Reinhart and her husband Rudy Fedrizzi, Heidi wrote one of the chapters in Ina May's book so she's kind of on that earthy/birthy/sexual/physical wavelength, only with the OB/medical role experience grafted onto it... I think Heidi is practicing in CT now in case anyone is looking for a kick butt VBAC birth attendant)~~