end your training on a positive 

http://www.gocomics.com/forbetterorforworse/2015/04/14  

We all know that you should stop training when your dog hits that wall...they are tired or confused or the wind is carrying 

the smell of something wonderful.  It is important to end on a positive note. Your dog will remember that end continue to 

enjoy and look forward to training.  So how many of us have had our dog do the 'wrong thing" but we use the matching 

command to make it right?  I'm sure we've all done that at least once.