I need help and advice please

Amber
March 28th I got in a really bad car accident. Luckily my only injury was a concussion, but it's still bad. It takes so long for the head to heal. Well it's my senior year and I'm missing my last year of softball. I got recruited to play field hockey in college! I'm so excited. I'm so worried I'm not going to be health by then. Things aren't getting better at all and I have to see a neurologist. I'm such an athletic person and it's killing me to not be able to run or do anything. Last night I did a bunch of ab workouts because I'm getting big from not doing anything. I woke up with the worst pounding pain from that. Sports and exercise are the way I get out my anger. Now I'm just in a rage all the time. How can I cope? How do I control myself and let things go? I'm having such a hard time. Any advice?