Take a moment to really acknowledge your feelings but try to sit down to write anyway.
In Acceptance and Commitment Therapy the psychological tool of acceptance acknowledges that we are allowed to feel a certain way without it impacting what we do. This means we can practice noticing challenging thoughts when they come up, but instead of letting them become a blocker, we give that feeling space, allowing those feelings to be there alongside you. Take a moment to really acknowledge your feelings but try to sit down to write anyway. Your feelings will likely still come up the next time you need to write – by habitually acknowledging them and writing anyway, you are showing yourself that you are committed to your values as a creative person.