Not easy, though, detaching from the wads of notes and pages and pages that sometimes do contain a worthy snippet, phrase or image.
But it's a matter of being brutal (she tells herself). Extract the image or the word with tweezers or needle-nose pliers--jewellers' pliers?--and insert as needed.
No one ever said novel-writing was easy. No one ever said it was fast.
So why the temptation to jog when you know it takes surgically-precise baby steps?