It does get better, if you put in the work and get the proper resource. During the worst of my recovery, I was going to 6 doctors appointments a week (vision and balance PT, biofeedback therapy, cognitive behavioral therapy, chiropractor, and accupuncture). With PCS, you need to treat it from both the mental and physical sides, as it significantly affects both.
For the physical, doing physical therapy to retrain your vestibular balance and your eye tracking is the best to retrain your brain on how to use those symptoms. I have also found that going to a chiropractor or massage therapist will help calm down the head and neck pain, as a lot of it is so to really tight muscles in the neck that wrap up and around the head. Learning how to massage my own neck and what stretches I can do to relax has been the most useful tool in giving me control over my own health, so ask your doctors lots of questions about what you can do!
For the mental and emotional, pain management tools and meditation helped me the most. If you see a therapist or counselor, ask them if they know any pain management tools or if they can look into some for you. The most revolutionary thing that I was told was this: Every time we experience a physical sensation, we attach an emotion to it. The sensation itself may be fleeting, but the emotion is what hangs on and takes up brain space. For those of us who experience chronic pain, the emotions attached to those sensations will be huge and full of anxiety, anger, fear, regret, sadness, and more, which takes up so much brain space and makes it hard to think of anything else. But, if you can identify the emotion attached to the pain and process through that, the pain itself becomes so much more manageable.