How many days does it take to make it a habit?

Well... I have no idea...anyway I'm ready for it.
I almost decided to lay in bed this morning, but I got up (just 30 minutes walking on the treadmill). I used to love running and could not wait to get that natural high from it.
Now I cannot wait to get back to that point. When I got out of Officer Basic Course I was addicted, slacked off and then was deployed to Iraq. After OBC I was maxing my run by running 2 miles in 15:26. I had never been able to do that before. I found several running partners while in Iraq and became addicted yet again.
Luckily, I was at Camp Liberty and Victory so it was set up where you could run long distance. There was a huge man made lake just before you get to what we called commo hill. We would run around the lake then up commo hill and back to our hooches. Overall, it was probably 10 miles or so if we did both the lake and hill. I'll have to see if I have a picture of it. It was huge and would make you feel like you were dying at first. It was great!
Micah