If we have to live our lives out of the fear of judgment of other people and society, we're not going to have happy or fulfilling lives.

Peer pressure, forced or self-motivated, makes us do things that we naturally would not. We feel forced to go against our own inner wishes and desires. This is a recipe for sadness, irritability, and frustration.

At times, this impact may not be immediate as we may be rewarded for giving into peer pressure. But in the long run, we are the ones who have to live with our choices and then, our mental health really suffers.