Many people make the mistake of forgetting how they got to where they are, right at the time they start doing “well”. They start to believe they have everything figured out and then they slowly stop doing the things that propelled them to success. Things become “easy” for them in the short-term, and in the long-term they fall hard.
Seasoned leaders have made this mistake a couple of times. Instead of doing so again, they focus on maintaining a balance of acknowledging success as well as what needs to happen next to keep it going. They get nervous when things become “easy”, which leads to reinventing themselves time and time again.