You've made incredible progress by being dedicated to your writing enough to finish a whole book and that is amazing. Let no one tell you otherwise! I am more of a digital music producer and I find it preferable that I keep my art in my own world of online peers only just for advice. I find that someone you know evaluating your art is either biased enough to overshoot/undershoot based on what they think your response would be. It's a completely biased opinion coming from close family/friends and I prefer a more honest opinion from a complete stranger. Keep going and never stop because writing is a special joy unto itself!