I have to second (third?) the advice to do some birth trauma healing with Birthing From Within techniques. Even though I consider myself a very verbal, articulate person, I found artwork to be really useful. Not everything is on the surface enough for words, and drawing helps get you deeper. Just keep drawing, and something that surprises you will come up, something that really pierces your heart. Draw the moments that make you cry, draw the sweet moments of your first labor. Then draw what you hope for with this birth, and what you most desperately fear might happen. I also like the Rahima Baldwin's book Pregnant Feelings, which has lots of questions to prompt you to think deeply about your fears, attitudes, memories, etc.
A friend and I, both pregnant and with baggage to release, did a
cleansing ceremony after working through our traumas individually. We got together, and stated our intention to clear ourselves of hindrances to health, acceptance, and happiness in our current situations. We had written down on paper five things we wanted to "let go" of for at least the rest of the current pregnancy. We read those to each other out loud, and then burned them. These were haunting memories of betrayal (by care providers, partners, ourselves) or of traumas from our previous births, as well as "falsehoods" or fears we were having trouble dispelling rationally. After that we smudged each other, and then read out lists of our hopes/visions for our upcoming births and new babies. Then we blew out the candle and ate cake.
The preparatory work is the most important in healing and strengthening, but the ceremony puts a cap on it. Voicing your intentions out loud is powerful. I really did feel lighter and clearer after "finishing" the birth trauma work, more able to just revel in enjoying my pregnancy and connecting with the new baby.
I also had some
craniosacral therapy done by a local massage therapist. It brought up stuff totally unrelated to c/s, but the emotional release of those memories/fears (mostly about becoming the mother of two!) was also helpful.
In more recent days I've discovered Byron Katie and
The Work, a process of questioning thoughts that really does help you to release them and understand very clearly what to do going forward. I haven't personally used it for birth trauma, but it certainly seems applicable!
http://www.thework.com/index.php
FWIW, my HBAC labor was without complication, smoothly progressing (which is what I asked for during our ceremony), but not quick (which I didn't ask for!) and without much thought of my previous labor or c/s. I really believe that all the processing I did helped to dispel the emotional punch of all those negative thoughts, fears, and memories.
I hope you are able to find your way to peace about your c/s, and that you have a lovely VBAC!