Fear and the evolutionary origin

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Going back to our African roots, when we lived in small human groups, we developed many instincts that help us live within these groups. Within the difficult natural conditions surrounding the human being at that time and due to the human need to work collectively to survive, the expulsion from the group was a great danger to the individual and could lead to his death.
This is why we care about what other people think of us and that's why we feel so afraid and anxious before doing anything that is valued by large groups of people.
Our survival instinct that works to manage our actions in proportion to the herd is the same instinct that makes us fear and fear what others will think of us.
Of course, today we do not live within this type of grouping, and nothing will happen to us if we reject some people, and this feeling is nothing but an ancient evolutionary deposit.
Understanding the roots of this feeling will make you more able to curb and tame it, and thus get better results.
The next time, before you give a public presentation, when your heart beats faster because of adrenaline, remember that this fear is what enabled your grandparents to survive.