on Jane Friedman site:
Throwing your new manuscript into the query trenches can be an exhilarating but nerve-crushing experience. I use a systematic and business-like approach to help take the sting out of rejections and keep me focused on moving forward with querying.
Before querying, I ensure my manuscript has been through multiple revisions, critique partners, beta readers and edits to give it its best shot. I also have a polished and professionally critiqued query letter.