After I finish a draft I let the manuscript sit for at least a couple of weeks and then go back and read it over. When I've made all the changes I want to make and have all of the big pieces in place I go down my revision checklist and make sure I haven't missed anything.
‘… and what is the use of a book,' thought Alice, ‘without pictures or conversations?'
The alert reader will recall this line from the opening paragraph of Alice in Wonderland, and will further recall that it is the lack of dialogue in her sister's book which causes Alice to wander away and fall down a rabbit hole. Lucky for us, but consider the author of the sister's book. Presumably Alice's sister continues her reading, and so he has not lost his entire audience, but to Alice, and to the rest of us, he will forever remain anonymous and unread.
Writing a synopsis is often seen by authors as being the hardest part of putting together a package and submitting your work to agents and publishers. It doesn't have to be dull, if you take some time to plan your approach and edit/rewrite it with the same passion you apply to the novel itself.
Writers will spend years writing, lovingly polishing and then marketing a novel, and yet they shrug off the synopsis with a comment like "I hate writing synopses."