I think this happens to a lot of people, men and women, where you reach a point in your life and all of a sudden realize that things have changed. You suddenly realize that people are coming up behind you, that maybe somebody might want to replace you for less money.
My success has been something I've worked a long time at and it's been a gradual process. I compare it to the idea of someone losing a lot of weight over a period of a few years. You don't really notice the weight loss overall but if you compare photos from then and now there's a big difference.