One word answers ... how adroit. Not.
We as a species are bio-mechanical machines, as Plato first recognised. What makes us supposedly different from a robot is emotional responses. It is at this juncture important to note that not all humans have emotional responses. Some are bereft of emotions.
The species in general has reactions to environment, situation creates a balance of 'emotions' which are created by the pertinent situation. One could reference Maslow's Hierarchy of Needs. These emotions flow in and out, up and down in seconds often.
The base emotion is FEAR .... Fear drives ALL OTHER EMOTIONAL RESPONSES .... This is in capitals to try and help people understand of that there is zero debate. None. That is the fact of human emotions.
Fear drives 'Fight or Flight' ... The base activation of the body in response to emotion. If anyone has ever been so afraid they feel sick, this is because the body is about to purge the stomach contents so you can run faster. People sweat when in fear because of the adrenalin coursing through their veins.
Now, here is the issue for the modern world. It is this, the internet, which is much the issue.
If one goes to 3rd world countries then the incidence of 'depression' and 'anxiety' as academic research proves is far lower, almost trace. Whilst indeed the world's most anxious and depressed countries are the USA, India and China.
The US culture? Work more, earn more, buy more or you are a failure. Do not ask for help, weakling .... India? Educate, educate, educate and look after your entire family with your income ... Indeed many families, meaning extended families from poor backgrounds send the brightest child through private education and university: Then that child has to support all the supporters once working. China? The Chinese have a vast work and money ethic, to the point of death. These are obviously generalisations but there is endless truth in these anecdotal statements.
This constant pressure on the masses in countries like the USA, pressure which has been ramped up by 24/7 social media and the endless toll of advertising and perceived social pressure ... means that for so many, those who desperately seek validation of the pack which is the normal state of the average human .. They NEVER
switch off 'Flight or Flight', they are held in a constant position of extreme emotional flux and distress.
That is why the west has these vast and growing bands of depressed and anxiety afflicted people .... The economic 'given' of the past 150 years is collapsing, the west falling as the east rises .... No more high paid industrial work for the poorly educated ..... Only more debt, constant uncertainty and for the 80% in the west, a hand to mouth existence. How long could any of you who work last without pay? A week? A month? ... Then who feeds your kids and pays your rent? That is where anxiety arrives from.
In poor 3rd world countries that is how the vast majority see life ... A tin shack if they are lucky and all day spent trying to find something to eat is the fundamental .. They have no expectations
... However, why does anyone imagine that illegal immigration is ramping up? Bizarrely because they haven't any food, medical care or anything more than a garden shed to live in .. But the local bar has internet TV and they want what they see.
Again this is a lay answer, but the reality is that if one holds an average human in constant flux, tells them constantly by all they see and experience that they are not good enough, they not validated by some unseen God of Capitalism and their peers .... Then pass out the antidepressants by the bucket.
Returning to an earlier point ....... Those who do not have emotions in any recognised sense, they do not get anxious or indeed depressed; because we have no fear and no need for validation from others.