Easily done

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For eager & reliable recall, be fun for the dog to come back to! Then often send them off right away to do what they wanted!
DT&B - Glossary of acronyms & jargon terms.
Encouraging good behaviours, whilst consistently avoiding practise of bad alternatives leads to extinction of the bad. So if dog sits 6/10 times it doesn't sit 4/10 times, encouraging with the right rewards (positively-reinforcing) enough for 9/10 times means it now fails to sit only 1/10 times, sit 10/10 means...