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.
Mother Teresa once said, "Holy living consists in doing God's work with a smile." ... The last thing many believers need is to go to another Bible study.
I developed a long time ago some habits. One of them is what I call "divert daily, withdraw weekly, and abandon annually." Divert daily is everyday you do something that's not work-related. You do something that relaxes you. Then you withdraw weekly. The Bible says every seven days you take a day off. And then abandon annually means you just go out and forget it all.