I was talking to a mum friend yesterday, geekgiraffe about how we don't know anyone who uses formula in our group of 20+ new mums. Now, we're in a very middle class town near New York City, but we kept on prodding at what we'd had that made it possible in the early weeks, when it's make-or-break in terms of establishing breastfeeding. And we kept on coming back to the same things: information, support, and time.
Information pre-birth: I got myself informed and I got DH informed. Reading the politics of breastfeeding made me SO determined to do it, and reading The Food of Love made it seem like it would be possible and maybe even a lovely thing to do. I recommend both but DEFINITELY The Food Of Love as it's more 'how-to' which might be more helpful for you at this stage. And your DH/Partner might read it, mine did and that was invaluable.
Support after birth came in three types: a lactation consultant when things were really going wrong around days 3-5 and one running our new mum's group at a nearby hospital who took drop-in appointments at any time (she's a godsend), MN whenever I had a 'argh!' question/need to rant in the middle of the night, and most importantly of all, my DH.
Get phone numbers, get group meeting times/places of LLL or baby cafes - get them all on your fridge now. But most of all, get your Significant Other onboard and get him/her informed.
My DH and I talked about it a lot, he was as committed to breastfeeding as I was, and knew enough about how it works to NOT suggest just giving DS a bottle to give me a break, knew enough to tell my mother to back off a bit when she said things like 'surely the baby can't be hungry again', knew to bring me a drink and a snack and the remote when DS settled in for clusterfeeds, knew to give me hugs and reassure me that things were going great and I was being amazing, knew to take the baby away for nappy changes/walks to give me a break and clear my head a bit when I'd had a tough few hours of constant feeding...and knew that I wasn't going to be putting loads of washing on, or making dinner, for any time soon after the birth, so he was going to have to.
Basically, if I hadn't had a partner who got why it mattered to me and was willing to help in all these ways, I think I'd have opted for bottles a few times in the past three months. Now we're going strong and I love it, but DH deliberately let me BF exclusively for the first 5 weeks (even though he was dying to give a bottle) because he knew about nipple confusion, and when he realised that expressing was a bit of a faff, he found other ways to bond with our baby. In fact, because of the games he plays with DS, and the time they spend staring at each other over the changing table, DH got DS's first smile AND first giggle...
Finally, time. We had time off work (and I hope you do, too), we had time off housework, and we had time to sit and feed, feed, feed when we needed to. Lansinoh is GREAT and I love my "my brest friend" feeding pillow, and if you want to express for the odd bottle I like my medela harmony handpump - but frankly, if you have information, support, and time, then you'll be grand. Support is the key, I reckon.
PS sorry it became a novel!