I, too, think it's too early to think you're damaged for life, though I am early on in the recovery process. A few weeks ago I started a thread on a rugby forum about concussions, and got quite a bit of hope. I met about 15-20 other players who quit from concussions, but almost everyone (except for one guy who kept playing without rest) had a full recovery after 6 months to a year. All exercising again and back to normal life. I'm sure there are other players who've suffered permanent damage, but it was nice to hear a positive story for a change.

As far as lifestyles change go, for now I'm just hoping that if I have to make any permanent changes in my life to cope with PCS, it will be eating healthier and managing my stress levels.