Turn the chapters into MP3s. Google doc to MP3, you only need word to use the service, and plenty of sites offer it for free. Then listen to the chapters. Do you like what you hear? Do you get that warm feeling in your stomach that you get when you read a good novel? Does the book wake feelings in you? Then it is a good book. If not, well, you have your answer. No one can tell you if your book is good or bad. You wrote it with your own memories in mind, your own experiences. Only you can judge it, more than that, only you have the right to judge it.