"There are two sides to every coin"

The proverbs are pretty wise, yet sometimes the meaning can change since one society to others. In this case, I selected this proverb for the reason that this means that you should always consider all the aspects of the situation because of you can see one side and suddenly the situation can flip and show you the bad side or vice verse.
Mainly, I think most of time many people do not care about the consequences that they can bring for other persons and ourselves; therefore we can damage people, even persons who we love. In conclusion, we should be careful of the implication of our acts to predict what can happen and avoid hurt other persons