Like I said in my post on the other thread: the VBACing mother may have white-coat fear (more intensely) and may not trust their body as fully as someone who has already given birth vaginally. I see you are a VBAC mom also.
We have different experiences that lead to our previous birth experiences. We may carry over fears from those births. If we had a long drawn out birth that did not progress that lead to a cesarean birth, we may secretly (or not so secretly) fear this happening again. If we had a cesarean birth because the baby "was too big".... we might mistrust our body to be able to birth any size baby.... Understand? What really helped me was the book Birthing From Within. It's best to iliminate all fears, or at least get control of them. Not all fears are just in our heads, some of them can have real basis. So we need to work through those ahead of time. If something does come up, you already know how to handle those fears.... My VBAC client was sure if she got the epidural, her chances for having a successful VBAC were over. Most of the time we discourage epidural, but in her long labor, she was able to cope better and allow her body to continue to open.... She was so disappointed in herself because she had planned a natural VBAC but ended up accepting the epidural. However, she got a VERY low dose, labored down, and had a successful VBAC!
It was very challenging supporting her. Between expansions she was disappointed in herself for accepting the epidural- she didn't think she would get her VBAC, during expansions she cursed and wanted a higher dose of the epidural...
Here is a good article to read through: http://www.vbac.com/fordoulas.html
For me, when attempting my VBA2C, I was VERY determined to succeed. I know I was so determined I couldn't see that it wasn't working. I had closed my eyes to other options. My dear sweet doula had to bring me back to reality.... I just knew if I did everything right, I would get my VBAC. Nothing else would do... I had labored for so long my judgement became clouded. That was 2 years ago before I became a doula. I am so thankful my doula talked some sense into me.... So my best advice for you is to work through ALL your fears, consider your options if you need them and make sure you are considering all the pros and cons. I would have been successful in my VBAC if there weren't circumstances out of my control.... Which was a hard lesson for me to learn- there are some things that we just can't control.
Good luck to you. Make sure you come back here and post your HBA2C birth story. VBAC stories are the best!