Actually I am not so sure it can be un-done by the way you think and act, it interferes with those things the whole issue with PTSD is it's not something you can just think and behave your way out of. And while I don't totally deny neuroplasticity, I question how effective it would be and doubt it could totally un-do the PTSD damage or whatever damage the long term depression has caused.

Of course it is not an illness like any other, much worse(well maybe not, guess it would depend on the illness it's being compared to) and incurable.