stubborn, stubborn, stubborn

Shelties aren't stubborn, normally
Best thing to do is ensure you make yourself into the best thing in the world that has more value than neighbours or other fun things
You won't get that if you ever call your dog to you for stuff that isn't fun for him...

Forget about the alpha stuff, dogs know humans aren't dogs, they just get puzzled if we think they want to take over, they really don't.

Use a long line, and don't call when you think he won't come, that way he doesn't get to practice not coming...
Think of it as you see a couple of hundred bucks laying around across the field and your Mom calls you to come see her... You may even hear she is getting aggravated with you, do you go and pick up the couple hundred bucks or you go back to mom to get a possible tongue lashing? lol

 

https://www.youtube.com/watch?v=ToVKCdWco4Y&list=PLMssKIjsDxXnCKbbCUBstbvql-KwV9ZDz uses a long line, like that. If your dog doesn't reliably come, I would use a line like that, or you may have a hard time getting the dog to come during high stimuli environments

I also LOVE kikopup, she has a lot of great training advice
She turned me into learning about clicker training and relationship based learning
My friends have taught their SIGHTOUNDS with this method, and if a sighthound can get a reliable OFFleash recall, I can assure you a Sheltie can
https://www.youtube.com/watch?v=rjd99MlmqqI

 

In order for a dog to be stubborn he must first understand completely what is asked of him and then choose to disobey. There are very few stubborn dogs in this world.
There are, however, many dogs who are untrained.
Forget the alpha, it is BS.
Your dog does not come because neighbor's yard is more interesting than you
Scroll down this blog, these series will be only avail for couple of days but you get the idea
http://susangarrettdogagility.com/2...r-dog-training/comment-page-1/#comment-385013