Written about breastfeeding, but equally useful for natural birth:
https://www.llli.org/faq/criticism.html
Your attitude and tone of voice can make a world of difference in how people accept your responses. The approaches and phrases listed below are helpful for dealing with criticism. Review them and choose the ones that are most comfortable for you.
If you know you will be in a situation where your actions will be criticized, prepare ahead of time by practicing some of these responses. Create your own as needed. Practicing the responses you prefer in front of a mirror or with an understanding friend, will help you to be more confident. When you are in the situation, pause a moment and take a deep, relaxing breath before answering.
Re: Article: Responding to and avoiding criticism
This is great, I especially love
"I'm glad that you care so much about the baby. I've thoroughly researched the topic and feel comfortable with my decision. I'd be glad to share my info with you"
Awesome, thanks for sharing!
I needed this: