when pumping try and relax (I used hypnobirthing techniques) and think about your baby/look at a photo of baby to stimulate the right hormones.
Now I'm a man, obv, but as an outside observer it seemed to be a little bit like sex in that if you're stressed and not in the mood it doesn't work very well. I think (and it is just a casual observation of course) that the thinking of loving babyish thoughts is quite important in success.
Of course, these thoughts are sometimes far away from mothers' minds.. post natal feelings and responses are a bit of a minefield.
