Stay calm. Seriously. If you stay calm and don't encourage your dog to be hyper-excited, then your dog will have a better chance of surviving your return.
It's also a good idea to start practicing this before you really need it.
When you come home, do you talk in a high, excited voice to your dog and get her all excited? If so, try just waiting until the dog calms down and then praise her. She'll learn that being calm is a good thing and a thing that you want from her. Most dogs want to please their masters, so this shouldn't be something that's terribly difficult for her to learn. Especially at such a young age.
Our dog (a 4 year old Jack Russel/Chihuahua mix) is prone to getting too excited and having accidents, so we have to be careful with her. And when we get home from work she jumps up and runs around, but we don't give her any attention until she calms down. And that helps her to calm down faster. It's still a work in progress, but she's so much better than when we first got her.
The basic technique is to just ignore your dog completely when you get home until she sits and is calm. Then calmly praise her. Then do this again and again until it's really set. You might want to go out and come back a few times just for practice because the dog might make the connection a bit faster that way.
Be patient. Every dog learns differently. Just stay calm and positive and you'll get there.