Welcome!
Glad you found this forum! I'm rather new and have found it extremely comforting knowing there are other people I can relate to, who also understand my squirrely thoughts and feelings. Just knowing I'm not totally alone with this sometimes debilitating problem helps.
The medication I have is Klonopin, it does a good job of keeping anxiety down and less panic attacks. I credit any sleep I get to that.
Other things I do to help myself are...nature walks, camping, kayaking, anything active that requires my attention so I don't dwell on unwanted thoughts. If I can't get out, exercise at home, cyr wheeling, petting my cats and playing with them, art. I started a home business but it doesn't distract me much, it still feels uplifting to be productive so it earns a point on the happiness scale. When I've saved profits and can get my vehicle repaired, I get a positive feeling and improved my life. I always have something playing in the background...music, mystery stories, audiobooks, anything to direct my thoughts to better places.
I've been to therapy off and on over the years, self-help books. I've found more useful information here, written by people who actually have similar experience with the way PTSD affects life than I have with college educated professionals.
Hang in there, its worth it! Best wishes!