A common explanation of human stress includes physical stress (heat, cold, etc.), hierarchical stress (low status, competition, etc.), and lack of social support (horizontal communication, belonging).
Supposedly, humans and other primates tend to stress themselves because we are smart enough to have a lot of free time (time not spent gathering food). As the neuroscientist Robert Sapolsky puts it:
“If you live in a baboon troop in the Serengeti, you only have to work three hours a day for your calories, and predators don’t mess with you much. What that means is you’ve got nine hours of free time every day to devote to generating psychological stress toward other animals in your troop. So the baboon is a wonderful model for living well enough and long enough to pay the price for all the social-stressor nonsense that they create for each other. They’re just like us: They’re not getting done in by predators and famines, they’re getting done in by each other.” (Why Humans (and Baboons) Stress So Much)
Sapolsky makes good points but I want to add something to what he says.
Humans are “semiotic primates.” That is, we live as much or more in a semiotic environment as a natural one.
This means that we stress ourselves not just by our place in a natural hierarchy, but also by how we understand where we are, what we are hearing and saying, and what others are hearing and saying when around us.
Since most humans have no way of fully adjusting their interpersonal communication, the semiotic environments they live in are ambiguous, frequently mistaken, sometimes dangerous. Our intimate semiotic environments are typically unsatisfying or stressful because the communication upon which they are based and which defines them is rarely, if ever, optimal.
When interpersonal stress is relieved through one of the three ways mentioned in the first paragraph above, people may exercise more, work harder to climb the hierarchy, or seek out more horizontal support from a club or temple.
Exercise is good, climbing the hierarchy is OK if that’s what you want, and adding social support never hurts. None of these methods will optimize interpersonal communication, however. They are substitute semiotics of a different kind.
The reason this is so is the core stress-inducing problem most people have is poor intimate interpersonal communication with their primary interlocutor.
It’s not bad to think of yourself as having a psychology and a psychological history, but this line of thought rarely, if ever, leads to optimal communication with your primary interlocutor. When we psychologize ourselves, we tend to generalize ourselves and others. We see ourselves as defined by theories (extrinsic semiotics) rather than by the the dynamic reality of our moment-by-moment interactions with the person(s) we care about most.
FIML optimizes communication between primary interlocutors and in so doing relieves some of the most deleterious human stressors by removing them as they arise. If your intimate interpersonal communication is good, you won’t care very much about where you are on the hierarchy.