Celebrate the win for a night. Then put it on the shelf and get back to work.

Winning deserves a real moment, and it also has a shelf life as a source of energy. Living off one for months turns it into the story you tell instead of the thing you are doing. The point of putting it on a shelf is that you can still see it without standing in front of it all day.

Next time something goes well, give it an actual evening with people you like. Then set a specific morning to be back at it. Deciding both ends in advance stops a celebration from quietly becoming a stop.