The most important person in your life is the person right in front of you. So simple yet so hard to honor. Being fully engaged with the person in front of you, whether you want to be engaged with them or not can have a profound effect on how you are perceived and the future fruits of that relationship.
The truth of the matter is our greatest interest is actually self-interest. Therefor if you treat the person you are with as the most important person in your life you are feeding that persons self-interest, making that person automatically indebted and grateful to you. By treating the person you are engaging with respect and 100% of your attention you reinforce their core belief that they are the most important person. There is nothing wrong with having this outlook. Of course “I” am the most important person to me. Of course you are the most important person to you. The person you are talking to is not the most important person to you, but if you act like it you will win their favor forever. They will love you and respect you, listen to you and tell everyone about you because you treated them with the respect and attention that they so badly desire, but so rarely receive. To feel wanted, to feel listened to and to feel respected, there is little more satisfying than that.
I urge you, give 100% of yourself to every person you are with, and to every conversation you have, just watch what happens. Treat each person you encounter like they are actually the person you respect most in life. Everyone wants the same thing, give it to them and they will repay the favor 100 times over.