I have the same issue on my commute. Last year part of this route was my "neighborhood" route and that hill stopped me dead. But I kept at it. Now it is a regular part of my day and while it's still a pain on certain days (I don't know why that is - on other days it's fine) I go back to the simplest of hill-climbing techniques: Look just ahead of you (NOT UP) and recite the alpahabet or count. It really helps.