Outside of finding a flatter place to run, here is a great strategy for attacking hills in general.
(In comparison to your flat ground stride and pace)
Shorten your stride but keep your pace. That is, take shorter steps but try to keep your steps per minute the same.
You may find that your steps will have to be really short in order to keep your "flat ground" pace but you'll pull up the hill. Sometimes I've barely gotten one foot in all the way in front of the other shoe but I've kept the pace. I find this good for transitioning between flat and hill and I don't over do the beginning.
