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.
Corporate America is a 20th-century dinosaur, trembling on the edge of extinction, and the only way for you to have a genuinely secure future is for you to take control of that future.
As one of my teachers, Buckminster Fuller, says, we were given a right foot and a left foot, not a right foot and a wrong foot. The point is that, there's always two points of view out there, and we need to increase our ability to allow another point of view. Then we have a better chance for peace.