PTSD does not go away. Even with treatment, there is no "cure" for it presently. If you no longer suffer from the original trauma, then perhaps you are numbing and have repressed that, but physical symptoms and other triggers are from the original trauma and PTSD. Sorry.

Many progress in healing through PTSD, some can benefit by EMDR.
You might not have to go through each and every issue, as the PTSD results from the brain chemicals changing at the time of the trauma, and prevents the brain from "filing" the memories correctly. Once you begin to work through issues, the brain "learns" how to file them and similar memories as well.

As others have said, you can heal enough to where it doesn't control your life, and you can enjoy it again.