Don't take it Personal

In life, we will definitely be met by some cases and situations.
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Some things will seem to happen randomly that can take us by surprise. When such things happen, all we need to do is to stay calm. Only very few people have learned to stay without getting agitated when the unexpected happens to them.

Other people may get in our way intentionally(maybe to test our resolve).
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Events may also occur to test our endurance and then we make some silly mistakes that defy justifiable reasons. At those points, the normal thing to do is to get agitated, confused or irrational. However the better thing to do is to remain calm or maintain decorum within ourselves.
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Staying calm means we don't take anything personal, it portrays us as people with higher understanding and perspective. When someone gets in our for example, instead of our lashing out, we contain our anger, it gives us a greater credibility, preseves our energy and definitely helps our power of concentration: this makes us think through that which is happening at the moment.
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The reason why we get easily offended by certain things is because we always expect too much from a given situation or some set of people, such that when our expectations are eventually not met, we suddenly begin to see it as an assault on our person.

The call is, "Don't take it personal", just shrug it off.