You always hear you don't get but one first impression. You only get one chance to meet someone for the first time. You need to be aware of how you act, for others ARE watching.
The more I work in "The Real World", I realize how important it is for your first impression to be a good one. Think of how many times you've entered a place, and the people you set the tone for whats ahead. If you see distraught, angry people you aren't going to be as happy as you were. For what is around you will effect your mood. Whenever you see happy, positive, and smiling individuals it wears off on you.
The importance of a first impression is absolutely remarkable. You need to portray what you want from others. You cant just take, you've got to give.
The happiness and gracious comments I've received from simply just speaking to someone and keeping a smile on my face has blown my mind. For the society we've lived in has turned to one that will send " :)" or a smily emoji while they won't express it across their face. They are so tuned into what's in their hands, instead of whats going on around them. They'd let the door slam into the person behind them, while they continue typing their text. Even when on a job where you are suppose to interact and they won't even look up and greet the person for their newest tweet is more important then the potential customer.
I've learned that the first impression is something that is full of meaning and can't be done over. Think about how you portray yourself, and if it is how you want others to see you. We live in a "resting b*&^% face" generation, whose content with blaming their first impressions on the face instead of focusing on wearing a smile. Let down your phone, and converse with someone even if it is just a simple smile.