It can be frustrating to attach your dog's leash to his collar when he's jumping uncontrollably in anticipation of a walk. This practical game teaches your dog that the faster he sits and stays, the sooner he goes on his walk.
Get your leash and wait until your dog is calm enough to pay attention. Ask him to sit and stay. Then start to move the leash clip toward his collar.
The second he breaks the sit/stay, very calmly say “oops” and hide the leash behind your back. Ask him to sit again. Once he is seated, move the leash clip towards his collar. If he stays seated, attach the leash and head for the door for your walk.
If he breaks the sit/stay, repeat the process of hiding the leash, asking him to sit, and moving the clip towards his collar.
Repeat as often as you need to until your dog understands that breaking the sit/stay makes the leash disappear.