@rckleinsmith - Have you been able to find any treatments or activities that help you? I have a friend who suffers from PTSD from his service in Vietnam and his wife volunteers for the DAV organization. They have some information you might find helpful on their website - https://www.dav.org/veterans/resources/post-traumatic-stress-disorder-ptsd/

Although I also am a Vietnam vet I don't have PTSD but do run the gamut on emotions sometimes. One of the things that has helped me that is shared on the page is practicing optimism - things that give you peace and a sense of happiness. I had the opportunity to listen to this doctor speak a few years ago and he had some really good perspectives on how the brain works and things we can do to help ourselves. Thought you might find it helpful also.

Happy Brain: How to Overcome Our Neural Predispositions to Suffering