Obviously I understand that there are things you can do to encourage your baby to sleep, but I think that by and large, the type of sleeper you get (generally talking about the first 6 months) is luck.
I was very lucky that my DD slept through from an early age, I don't know why she did, but glad that she did. Napping on the other hand was a fricking nightmare.
However, my MIL and a friend of mine, both of whom had good night sleepers, think it is nothing to do with luck.....
AIBU to think that is a pile of shite