A well-known medication plus systematic talk therapy has reduced symptoms of PTSD. This can potentially reduce disturbing memories after they have been reactivated in a controlled therapeutic manner. Other drugs might help as well.
The resting mind may correspond to a "default mode network" found in brain scans, so being in the moment--mindfulness--even eye blinks-- might parallel a built-in biological pause for neural refreshment.
Brain connections that control muscle movement--better with practice? Musicians and recovering stroke patients show adaptation of neural pathways from the movement center in the brain after intensive practice, studies suggest.