Jamesaritchie said:
Send it to an agent or an editor. Trust me, they'll be completely objective.
Not really. If they were all totally objective they would all agree on what is good and what isn't. They don't. My first published book garnered a note from one agent that said, "don't give up your day job."
And most times the only feedback you get is a preprinted letter or postcard that says something to the effect of, "not for us."
Many writers feel at one time or another as if they are writing in a vacuum, unsure of whether or not they have any skill and forced to rely on questionable feedback from friends and family members. Years ago when I was sending stuff out and getting multiple rejections, I knew enough about the business to realize that those rejections might mean my work sucked, or they might mean it simply didn't appeal to those particular agents, or it might mean I was a tad bit off on what was hot for the market at the time. How to tell the difference? If my writing truly sucked, I wanted to know that. If I had some talent and the rejections were merely a matter of timing/subjectivity/persistence, I wanted to know that, too. I felt my writing was decent enough but I'd read some truly awful stuff produced by writers who felt the same way about their own work. I didn't trust my own objectivity and I was starved for some good, knowledgeable, objective-as-possible feedback.
I eventually found that feedback when I took several creative writing classes that involved critiques and I ultimately hired the teacher from one of those classes (a published novelist and starving grad student) to do a line-by-line critique of the novel I was then shopping around. It was the best time and money I ever spent. It helped me to see that I did, indeed, have some talent but that I needed to improve certain skills. The next novel I wrote was the first one I sold.
Not every writer can afford to hire someone the way I did (truth be told, I couldn't afford it myself when I did it but I managed to scrape some funds together because I was desperate for that level of feedback) and free critiquers may be of questionable value. But if you can hook up with a good beta reader who isn't afraid to be honest and who has enough knowledge to critique writing skill issues (grammar, spelling, passive voice, POV consistency, sentence structure, show vs tell) as well as problems with story, plot, overall flow, etc., it can be a very rewarding relationship.
Beth