The best advice I got: the first six weeks are the hardest. Right around the six week mark, you’re ready to chuck the baby off the balcony, then he smiles at you and you realize it was all worth it.
You got a lot of great advice already, especially to smile and nod when everyone you know (and plenty of people you don’t know) give you advice and do what works for YOU.
Things that worked for me:
If you plan to breastfeed, try to go to one La Leche League meeting before baby is born. When you go back with baby, you’ll have already met the leaders, know where to go, etc. I made some of my best mom friends at LLL. There were certainly some boob nazis in my group, but also lots of more moderate moms.
I was a SAHM for six years, and I loved being part of a moms group. It can take effort to find your people. Try LLL, meetup.com, library story times, swim lessons, mommy and me classes, etc.
It can be very hard to go against the advice of someone who is a trusted expert. For me, that person was my MIL. She raised six kids and has helped raise some of her 12 grandkids. I love and respect her. I visited her when my older son was a few months old, and my MIL kept insisting that he wasn’t hungry, and that I shouldn’t nurse him yet. After a couple of long and painful days, I reminded myself that she hadn’t breastfed, and that my kid didn’t need to go three hours between feedings. And that it was ok for me to simply take the baby and feed him. She wasn’t about to disown me.
I loved babywearing! If you have friends who babywear, see if you can borrow a few different types of carriers to see what works best for you. Some of those suckers are crazy expensive.
Probably the worst “mistake” I see parents making is not caring for themselves and getting consumed by guilt. These next two are extreme examples, not the norm.
I know a mom who had severe PPD and PTSD due to a traumatic birth. People around her didn’t realize the extent of what she was suffering and were telling her to “snap out of it.” Would you tell someone with a broken leg to snap out of it? Fuck that. She needed to stop breastfeeding so she could get on meds. She was wracked by guilt for stopping breastfeeding, but that is absolutely 100% no doubt what she had to do in order to care for her child.
Another mom I know has three kids, ages 7, 3, 2. She’s still nursing her 2yo all night long, and neither she nor her husband is sleeping and they’re both wrecks. I have no problem with extended breastfeeding (I did it), but if something you are doing is literally ruining your life, STOP DOING IT.
tl; dr: it gets easier!