You may still be going through a period of adjustment, even though you have come so far in your healing.
I had a spell like that about 6 months after my injury, where I was pushing myself really hard to get "back to normal," even though my body wasn't quite there yet. The hardest step was leaving my cane at home. And I was trying to finish grad school that year, so it didn't help that I didn't have a lot of stamina and was in pain all the time. Not enough pain to stop me from going about my day, but enough to affect my general sense of well-being and quality of life. I also had some episodes of anxiety related to my accident.
I got myself back into PT since I felt like I needed the support, and also talked to someone about managing my exposure to anxiety triggers. I learned that even though I had been cleared to return to full activity, I needed to carve out time to take care of myself, physically and emotionally.
Be good to yourself, Clock. Do what you have to do in order to keep the good healing vibes going!
2014 Bobbin Bramble / Brooks B67
2008 Rodriguez Rainier Mirage / Terry Butterfly Tri Gel
2007 Dahon Speed Pro TT / Biologic Velvet