Today was a reminder in flexibility. I think if you hope to work as a creative, regardless of which field/discipline, you have to be flexible.
Circumstances change. Sometimes the scope of your work changes. Even time frames change.
You can’t rigidly cling to what you expected. Rigidity doesn’t allow for spontaneity or creativity. Both are necessary. Both also help preserve your sanity when things do change quickly.
Flexibility is a good thing.