Your question (1): "Why are we so afraid of change?"
Your question (2): "And what are the strategies to cope better with it?"
Your attempt at reasoning: "Once we’ve found something we like, we keep going back - the same restaurants, vacation spots, shops, etc. Big changes like moving house or changing jobs can send the best of us to the verge of a nervous breakdown. Explain why are we so afraid of change?"
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Your question (1): "Why are we so afraid of change?"
You have constructed at least two non sequiturs:
• http://rationalwiki.org/wiki/Non_sequitur
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Your premises:
We return to things we like.
Change in domicile can be stressful.
Change in paid employment be stressful.
Your conclusion:
Human beings fear change.
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Your premise:
Some of us are better than others by some unspecified metric.
Fear of change causes psychiatric disorders.
Your conclusion:
Human beings fear change.
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Or combining the two:
Your premises:
Once we’ve found something we like, we keep going back.
Big changes like moving house or changing jobs can cause psychiatric disorders.
Your conclusion:
Human beings fear change.
Or to be blunt...
Your premise:
Human beings fear change.
Your conclusion:
Human beings fear change.
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Essentially you are begging the question, "Please believe that human beings fear change."
• http://rationalwiki.org/wiki/Begging_the_question
After that fallacy of reason, you have asked readers to prove your claims, or more likely, to supply some rationalization. I think the latter is more likely what you have in mind since it is clear that you cannot construct a realistic argument.
In summary:
You have not supplied a reasonable relationship between your premises and your conclusion. Put another way, your conclusion is an over-generalization not supported by the alleged evidence you have cited.
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Your question (2): "And what are the strategies to cope better with it?"
Since your question concerns an assertion about all human beings, it is in the realm of what is called innate cognition, that which arises from each of us being the same kind of animal, each having the same kind of brain.
On the other hand, the specific evidence you have cited--wrongly or rightly--are mostly learned behaviors. Had our ancestors universally behaved in regard to change in the manner you have described, i.e., "the verge of a nervous breakdown", our species would long ago have died out.
Your description does not address adaptive behaviors. Right or wrong, it describes abnormal and maladaptive behavior. Our perceptions and desires are products of conditioning and other sentient experience we each have acquired up to this point in our individual lives. We can change our sentient experience however by a sort of deconstruction into component parts; from that point it is ultimately a matter of adopting new, rational, wholesome paradigms, if one can find them.
Consciousness is a function of a cognitive neural network processing both sensory data and memory. Sentient experience can be subjectively deconstructed into four foundations of mindfulness:
1. Mindfulness of body.
2. Mindfulness of sensation as pleasant, unpleasant, or neutral (physical sensation).
3. Mindfulness of state of mind (attitude, emotion).
4. Mindfulness of content of mind (ideas, learned skills, memory, mental images, beliefs).
Sit in a comfortable position, legs crossed and back erect if possible, and with as little noise and distraction as possible. Focus your mind only on your breathing, counting mentally “1 in, 1 out, 2 in, 2 out, 3 in …” and so on for a cycle of four or five breaths. If your mind strays from your breath, which it inevitably will, make the experience the target of mindfulness, attempt to deconstruct the activity as in the above schema, and return to count the breaths mentally.
As you do this there will be the usual background of a continuous stream of thoughts, random or specific ideas, and images, feelings that come and go. These are the things that usually drive your perceptions and behavior, even your dreams.
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Educate yourself. You will be pleased with the result:
• Where we live:
“Geosystems: An Introduction to Physical Geography” Christopherson, Robert. (Prentice Hall)
• Where we came from:
“Introduction to Physical Anthropology” Jurmain/Kilgore/Trevathan/Ciochon. (Cengage Learning)
• What we have been doing:
“History of the World” Roberts, J.M.; Westad, O.A. (Oxford University Press: 2013)
• Life science:
“Biology” by Raven/Johnson/Losos/Mason/Singer (McGraw-Hill)