I have to say that having beta readers is the best thing ever. Having a critique group to go over your work and tell you what they like and what needs to be fixed is so very very very important. See in the case of the previous sentence, a good critique partner would say, "You don't need that many very's you could do with just one, or better yet, use a stronger word like extremely".
That my friends is what I'm talking about. I've had a handful of people (Writers) who have read my recently finished manuscript, and while they did give me encouraging feedback on what they liked, they also pointed out things that I could work on improving.
I highly recommend you get yourself some readers if you are writing. I love mine. Thank you so much.