This title might sound like some intellectual bullshit, but I consider what I'm about to type to be very practical and useful:
We think of the body as being is either a good or a bad state. When we are in a good state, there is high thyroid, progesterone, pregnenolone, DHEA, testosterone (in guys), etc, and our metabolic rate is high. When we are in a bad state, there is inflammation, fibrosis, high cortisol, high serotonin, high prolactin, excess estrogen, etc. Peat talks about some of these "bad" things as being essential components in a stress reaction - for example, if there is a scarcity of food, we are better off lowering the metabolic rate.
The stressed state can be thought of as a sort of "locked down" mode. Analogous to how inflammation and fibrosis create rigidity in cells, the same factors that promote fibrosis create a sort of rigidity in the organism as a whole - under great stress, people often become anxious and withdrawn.
I've noticed a pattern in my various experiments where I always seem to get good results when I first try a new change in my diet or a new supplement or whatever. However, as soon as I decide that this new thing (whether its drinking lots of coffee, avoiding fat, avoiding fiber, eating lots of fiber, etc.) is the cause of my good feelings, I start to lose that good feeling even with perfect adherence to that idea.
Since the state of feeling good basically involves the absence of inflammation, fibrosis, and similar "lock-down" stress responses, I think that an essential component to maintaining that good state is to avoid locking down on any idea or habit. In order to maintain the high energy flux and and absence of lock-down stress responses in your cells, you have to live in that same liberated, high-energy way that you want your cells to function.
The human organism as a whole can be viewed as a macrocosm of the individual cell. You want your cells to readily take in energy and metabolize it, to respond to stressors in a way that is best for long-term health, and to never freeze up and disrupt their functioning. A healthy person will behave much in the same way as his cells do.
u gotta become the cell bro