It's very clearly stated in the film: You make your own choices, and what you're always fighting is ego.
“People are famous for being famous and for nothing else. And good luck to them, because it lasts about a year and then they're nothing again.”
“I don't think I even knew how big we were at the time. It was mad. I gained a lot through East 17 and I'm grateful for being able to have that experience.”