Except that as soon as he sees the leash, he starts up. He has jumped up on the wall that hold the mirror and hooks where his leash hangs, and torn it out of the wall! He is 105 lbs, so it's hard to manage him when he gets all excited like that!
Start carrying the leash around with you ALL THE TIME.
If the ONLY time he sees the leash is when you go out - he KNOWS what the leash means and will start getting over excited as soon as you reach for it.
But, if you carry the leash around all the time, or grab it from the hook, walk around for a minute then put it back - he's not going to know when 'leash = walk' and won't get so excited.
Once he's calm about you picking up the leash the next step is to hook him up, then unhook him and put the leash back. Hook him up, walk around the house, then unhook him and put leash away. Repeat alot.
Step 3 - put leash on, walk to door, take leash off and put away. Repeat.
Step 4 - put leash on, walk to door, open door, close door, take leash off and put away. Repeat.
Step 5 - put leash on, walk to door, open door, walk through door, go about 5 feet, turn around and come back in, close door, take leash off and put away. Repeat.
IF at any time the dog starts to whine - go back one step
Steps 6 and on - simply add more distance to your walk before you head home. Usually by step 6 the dog has learned to settle down before you head out.