You will be more likely to find more bests and deal better with the worsts if you are committed to ob nursing and love it. I work pp and another nurse there, you van just tell she hates it- I mean there is a lot of pressure and heavy workloads but I still love it mainly because I'm a breastfeeding nerd
but that doesn't help her. So for me, the bests and worsts of postpartum nursing:
Best: getting a baby to latch!
Worst: for me it is dealing with circumcisions. I'm not against it per se, I mean we circ'd my son but the whole thing skeezes me out. I cannot assist in them and I hate doing the dressing changes. I like teaching parents to care for them extra special afterwards though.
I love postpartum nursing so much that even when I had an anencehalic baby who was dying and on comfort measures only, and I cried big tears with the family, I still loved my job.