Doing it differently the second and third time around.
One of the reasons I was so excited to be having another baby back in 2010 was that I felt older, wiser, and more prepared. I had been a mother for 7 years by then, which doesn't make me an expert by any stretch of the imagination, but it did give me a decent amount of trial and error to go off of. I mention it briefly under the "Cloth" tab above - cloth diapering, breastfeeding, staying at home, sign language - a few things I wanted to try out with my third. The biggest change I wanted to make was the amount that I was present. I was absent for a lot of the twin's day to day life. I worked full time almost continuously from before they were born, until they were almost 5 years old. Fortunately, the twins survived, and are wonderful little women today. That said, making these changes in my parenting style made a noticeable difference in Anna's behavior and development, as well as my experience as a mother.
3) Baby wearing. Big fan. The Sailor and I used Baby Bjorn carriers with the twins occasionally, but we were rarely out together with them, so it wasn't an option very often. I wore Anna quite a bit in the Moby Wrap for shopping, outings with the twins, etc. Hands are free, no stroller to push, and she's safe and close.
4) Cloth diapering gave me a sense of pride and accomplishment, once we got into the groove. I felt like I had gone from a mom that didn't do enough and never had enough time, to one that went the extra mile for a change. Although if I had the twin's baby days to do over again, I wouldn't have cloth diapered. Women that cloth diaper twins are some kind of super hero. But, doing something that had a positive impact on baby and on our environment gave me a boost of confidence. Parenting is more fun when you sprinkle in a little confidence. Not to mention, it saved us $!
5) Co-sleeping isn't for us. I have safety issues with it, but I won't get into that. This is somewhat related to the good sleep habits I mentioned above, but since we didn't co-sleep with the twins and they weren't good sleepers, I don't think that should be the motivation. What did motivate me were two things; I want my bed and privacy back, especially when my husband is home. That's the only space in the house that's designated solely for our use, and it's important to keep that sacred. And I want baby to be comfortable in their room and get used to self-soothing. I'm not talking about crying it out, but letting a baby fuss a bit on their own once they're 2-3 months old can save you a lot of headache later. I keep baby with me for 4-6 weeks, then she goes to her nursery at night.
That's it for now. I've considered looking into making my own baby food this time around, but we'll see what life is like with four kids before I commit to that. If you actually read all of this, thank you! It's mostly for posterity and reference later on for me, but also to share what worked for us.