HE DESTROYS EVERYTHING!!!

Hi! I am new to this forum.
So I need some help! I have a Golden Retriever, I have had a lot of other dog breeds but he is my first Golden. I love him to death but we have a serious problem. If he is left alone he will destroy everything in sight. LITERALLY EVERYTHING from paper to packages to plants. I have no idea what to do. He just turned one today, I have only had puppies (2-7 months) tear things up but it was never like this and they learned within a week or two that it was not a good behavior. Every once in a while they would tear a dog toy up but that is expected. Plus I didn't mind buying dog toys. I have been dealing with this since he was 5 months old. I have looked it up online, asked other people who have had dogs. Right now I have him on a run cable that lets him run and gives him plenty of room to move. But I don't want that to be the permanent solution. I would feel horrible if he would have to stay on a cable all day unless someone is outside with him because he hates being inside. HE LOVES TO BE OUTSIDE. I have tried taking everything he can destroy and putting it away but he still finds something. Digs up plants, destroys the small trees and bushes in the yard. I have NO IDEA WHAT TO DO! Any help will be greatly appreciated