Q. What is the best way to make my 9 month old Golden Retriever stop jumping on people?
A. There are a couple of things you can do. First off, try ignoring your puppy completely until all four paws are on the floor. Once your pup has settled a bit, you may reward with petting/praise. If your pup jumps up again when you begin to give her attention, immediately stop, turn around, cross your arms, and ignore.
Another thing you can do is teach an "off" command. This command is a PREVENTATIVE ONLY command. This means you never say "off" AFTER your pup has jumped, only BEFORE your pup has the chance to jump. To teach this, you place a piece of food on a table/chair/counter. As your pup approaches the table/chair/counter, you swoop your hands in front of her face and say, "off" then immediately reward with a treat FROM YOUR HAND. Practice this for weeks before you decide to use it as a preventative before she jumps up onto you.
Remember to tell all guests they need to ignore your puppy until she settles as well. This is key.