I know the feeling, its awful isn't it! But I always look at it this way, at least if all of the bills are paid then at least you don't have to worry about more coming in for a bit heh.
I'm trying to save money right now and making NO headway at all. I think I have $11 in my savings account? Heh.
I've started looking at websites like discount grocery sites. They don't necessarily have everything you want but you can get some things in bulk like toothpaste and other bathroom products that are normally quite expensive. Then you don't have to buy them again for ages.
We've also started going to the local farmers market on the weekends. It's a bit of a pain because we have to take cash but they're quite a bit cheaper for some fruit and veg.
And we've done a bit of a search around and found a cheap-ish every day butcher and green grocers.
I know it doesn't help when the money isn't in your hand but it might next pay day (if you're not already doing those things).
Long story short... I feel your pain!