Enthusiasm can be rediscovered. It means you can get enthusiastic about something that you have been doing for a year, a two or decade.
I am beginning to suspect that enthusiasm is a sort of skill even.
Often in my work I meet people who get bored of the task within a week, month or a year. While this is natural and understandable, I am also amazed how much people are in the convinced belief that they do not have anything anymore to learn about the task.
Mastery comes through pushing the layers of resistance and rediscovering enthusiasm. Learning to look at the ‘familiar’ activity for example through different perspectives (like six thinking hats) is key here.
Enthusiasm is a form of curiosity and how it is connected to everything else, a skill to see and always look again with fresh eyes.