There are so many things to take into account - your ambition, your ego, the press, the consumers. You can never be sure that you'll be on top of the pile again.
I design for real people. I think of our customers all the time. There is no virtue whatsoever in creating clothing or accessories that are not practical.
You can think you've made it and yet the next day's press will always be waiting for you, the public will always ask more of you. In short, you can always do better!