I don't care how much power, brilliance or energy you have, if you don't harness it and focus it on a specific target, and hold it there you're never going to accomplish as much as your ability warrants
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.