Do not be afraid to set aside or even abandon a manuscript. Some stories are good but the execution is bad. You’ll lose confidence and time remaining loyal to a manuscript that’s not going to work. When I finished Dr. Bird I didn’t know what to do with it. I didn’t know if I wanted to publish it. So the manuscript sat on my computer, unread, for a year. When I read it again I loved it, edited it, then queried agents, etc.