neuroplasticity - it might be possible to train the brain to be 
better at feeling certain emotions, such as compassion

Train Your Mind, Change Your Brain: How a New Science Reveals Our 
Extraordinary Potential to Transform Ourselves, by Sharon Begley

case studies about how the brain can rewire itself

The Brain That Changes Itself: Stories of Personal Triumph from the 
Frontiers of Brain Science,
by Norman Doidge


"People Who experience mood swings, fear, voices and visions"