I give you two.  1) If you choose fear... your DNA (Double-Helix) tightens up like ringing out a dishrag.  If you choose love (or any positive disposition) your DNA double helix relaxes and expands.  This is immediate. 2) Every emotion has a specific neuropeptide associated with it that your pituitary gland sends out to your cells.  This instructs your cells on what disposition you have chosen.  In-turn it provides the cell nucleus instructions on how to react. For example. If you choose terror and fright the cell will stop all reproduction, cell digestion completely stops (and you immune system is diminished). If you chose joy the cells increase reproduction, digestion continues and your immune system is boosted.  Does that help?  The entire book is packed with such... only I explain it interms of the ATOMS FAMILY.  DNA played by Grandpa.  Neuropeptides played by Party Animals....etc. The bottom line of just these two is:  You won't be so quick to get angry about...well, anything, when you realize the harm you cause yourself and your biology.  You will be stingy in chosing anger quickly.  Do you know anyone that tends to be sick all the time? What is their homeostasis... their standard self-chosen state of being?  Angry, upset, complain, depressed...something generally negative?  The body  will  "Flesh-out" your choices. That is how being human works.  There is no other option.