Often authors turn to friends and family as first reviewers of a draft. However, they may be so impressed that we finished a book they are not sufficiently critical, in the literary sense.
More likely, friends and family will provide general reactions. My sister's reviews always lead to at least one forehead slap, with me asking, "How did I not see that?"
Once you have comments from family and friends, you—and only you—decide which to incorporate or which to disregard. You may have a friend who thinks because they took the time to read your project that you should take their advice. Not so, though it's important to thank everyone who offered feedback.
We wouldn’t start a book or blog post if we didn’t think we had something worth saying. No matter how modest we are, we like that first draft or we wouldn’t be passing it around for comments.
Even so, our work can always be improved. An author is too close to a project to see its flaws – perhaps even to spot inconsistencies or inaccuracies.
That’s why we ask for input.
Stay confident in your work. When it comes to comments, take what you like and leave the rest.