Physical injury does lead to depression. Depression changes many people. Pysical injury can change people. Change is normal, though we may not be able to accept the changes themselves. Maybe they are good and maybe they are bad. How you handle them is what makes a difference, IMO.

Being a cop has it's draw backs. You have a lot of enemies out there. Somethings just won't change. I'ts been like that for the past 150 years and will be for the next 15,000 years.

One trick I learned that has helped me some, is I envision all my troubles sitting inside my head. I closemy eyes, take a deep breath, and as I exhale and little bit of those problems go out my nose and disappear. No, they aren't "gone", but just not inside me as much. A psychological trick my counselor told me of. And keep doing it until they are all gone.

Just an idea.