Learning to Heel

I'm starting to get the hang of this. John and/or Ofie take me for a walk at least once a day. I usually do real well at the beginning but by the end I get so excited I start to pull on the leash. John read about turning 90degrees and letting me run out of leash just before he says heel. I have a much harder time trying to pull on the leash sideways. Then he praises me when I get back in the box (an imaginary box). I was doing real well coming back this morning until we came to the culesac. I automatically turned to go home but John turned the other way. It's probably going to take a while before I finally get it. I really get excited now when I see the get out the leash. I hope they keep taking me for walks.