When we meet people, knowingly or unknowingly we do some such things, due to which people form an opinion about us. Now whatever you want people to decide one thing about your image.
If someone talks to you and you look here and there, it has a very bad effect on your image. This makes people feel that you are not interested in their talk.
Many people make different types of faces while talking. This spoils the mind of the person who is talking to you. Along with this, the one who is watching you also feels bad.
Many times it happens that when people talk to us, we are engrossed in some other work. Do not pay much attention to their words. The person in front can consider this thing as an insult.
Be polite to the one who serves you in the office. This includes cleaners and tea sellers. If you do not treat them properly, then they consider you arrogant.