Another way to limit yourself is to build runs, but only enough for Your Magic Number of dogs.
Only keep enough crates for that many dogs. And stand firm.
If you think you might be too temped to go over, then keep yourself at one less than your magic number.
If you have already gone over Your Magic Number of dog, then you have a problem. If you are not emotionally attached to some of them you could re-home them. If you are don't want to bother to sell them yourself, you could call a rescue or shelter - but I just can't recommend any, you'd have to try to research one in your area or ship.
There are some rescues on Petfinder
http://www.petfinder.com/index.html
