Aly's got some great advice there. I was also going to add
that if you're angry, stressed, having a bad day, don't call her to
you. Make sure you're in a happy, happy, joy, joy mindset,
when training, "come". I think dogs really can sense your inner
feelings, so while you may think your tone and body language
are fine, they can read otherwise. Gotta be true.

Normally Oz comes to me really good, but the other night in
agility, we ended up having to work out with the advanced class,
who were preparing for a competition. There were tons of
people watching and the whole process was run like a
competition. I was stressed to the gills. Totally nervous
about all those people watching us. It was not in any way
shape or form directed towards Oz, but when it was our turn,
he refused to come to me. I had to go get him several times.
The instructor came out to talk to us to try and calm both of
us down and was telling me he was feeding off my stress.
You could just see he was like "man, I'm not coming to you,
there's something really wrong with you right now".

Before our second turn, I started pumping us up. Talking
excitedly to him. Telling him he was gonna get his Popeye's
biscuit everytime he came to me. Didn't even have to do any
obstacles, just as long as he came. No worries this was all for
fun. And truth be told it was doing more to releave my stress
than his. By the time we got back in the ring, I was totally calm.
Completely focused on just having fun. He did great. Came
happily to me everytime I called him. You could just see in
his face, "Oh thank god, you're back!".

Par...