Therapy is going to be very important for you (you will hear that from everyone here). Having someone, who is a trained professional to help talk us through the trauma is key. Yes, self care does play a big role too. Finding things that you like to do is really key. Drawing, coloring, painting, crafting (I call it arting). Reading, knitting, sewing, any sort of hobby really. A lot of people will tell you they have a ton of little hobbies, and it helps, because you can get "bored" or just "not into" one for a while, but keep it in your circulation of activities. Journalling to get the thoughts out has been really helpful for a lot of people. A lot of us have our own stack of notebooks filled with writings.
Even mundane things like organizing your house (it really is rewarding in the end). I recently joined a local book club, to help get me out around people. (social anxiety). So if there are local clubs that might interest you, it would help to get out and around people.
Things that get you to feeling "normal" (if there is such a thing for us)
Reading PTSD geared books and workbooks is a great way to not only know more about what is going on with you, but help you to work through it. CBT is something you might want to bring up to your therapist. When we can rework the way we think, we can have a better outlook on things, and create more positivity.
For me, yoga and meditation have been helpful as well. People shy away from meditation because they think they are doing it wrong when they can't shut off their brains. But allowing the thoughts to come in and recognizing them is all a part of meditation, and you can find so many different techniques online.
So I guess I have just listed a lot of self care. I have found that the more things I could find, to take care of me, the easier I could make my day. But I could never have begun any sort of journey if I hadn't read about my condition. (you can search the forums for a ton of book recommendations, and there is a PTSD workbook that a lot of people swear by as well). I cannot list one for you right now as today my brain is "scrambled", and I cannot reach back and recall any titles for you (I apologize).
I know a lot of other people will read this and have a list of books that have helped them, and better ideas then I can give you, but I hope I have helped a little. Take Care x