Mind-Body, Emotions, Stress, Brain Health
I think you would find the mind-body link info about the effect of sugar,
chocolate, proteins and carbs–direct link to brain and body chemistry very
interesting…as certain foods are eaten, mood can go up and down (even
true, serious depression)..in “Potatoes not Prozac” book. I have not read
such detailed info anywhere. Specifically discussed are the brain chemicals
serotonin, beta-endorphins and glucose. Interesting discussion of the
over-prescription of serotonin based drugs (prozac and others) when many
(not all) people can feel better emotionally and physically by altering
their diet (specifically combining carb with protein and avoiding loads of
sugar products or alcohols). There is also specific info about the affect of
foods/sugars on the alcoholic person or even those whose parent(s) are
alcoholics (their body chemistry/brain chemistry is different).
The books about seasonal affective disorder, where sunlight plays a role in
our mood (i.e. getting depressed or blues in the winter time) is another
interesting area. Exposure to certain (full spectrum) light increases
serotonin levels which boosts mood.
There are loads of books about the power of positive thinking, see the
self-help or even new age section of a bookstore (or online book store).
Most focus on healing past issues or wounds and thinking positively for the
future.
Also if you are looking for an extreme discussion, the religion Christian
Science believes so much in the power of positive thought that it can
prevent or cure disease in the body. See www.spirituality.com for info.
I enjoy reading different perspectives and forming my own opinions. My
recommendation of these books does not mean I am fanatical about any of
them. 
Christine