A great quote about football, but it applies to any business:
"It's kind of like the questions that have been asked about what it's like right after being world champions," Coughlin said. "We go to the parade, we come back from the parade, and the next day we're grading players, we're ranking players. The business just goes on. Enjoy it while you can, because you've got the next hurdle, and in order to get back on schedule, you've got to deal with these kinds of things [immediately]."
What do you do right after you complete XYZ? Begin again and go on the next thing/level.