Most people achieve their goals and are like, "Is this all there is?" We are supposed to keep growing so we have something to get. What we get never makes us happy. You play yourself when you forget that.
A lot of people change for good. Some people just fall off. Just trying to progress in anything, no matter what you're doing, I feel like any progression you make... some people aren't gonna be around you that were around you.
You have to have the service mentality in the sense that you subjugate your own ego, and you subjugate a large part of your own life to really helping other people, being successful on their behalf.
To effectively communicate, we must realize that we are all different in the way we perceive the world and use this understanding as a guide to our communication with others.