This is like asking me how I deal with the Great Pumpkin, the imaginary character that Charles M. Schulz created. I don’t accept it as a real thing.
That doesn’t mean there aren’t times when it is difficult to sit down and write. Sometimes doing something else is just a choice, a matter of procrastination or distraction.
An absence of discipline.
If I somehow found myself going weeks or months or longer without writing anything, I wouldn’t consider myself a victim of some imaginary blockage. I would quit calling myself a writer.