I think I said before about how important it is to find some time to clear your head, and I'm pleased to know you have a place within easy reach to do that!
I too suffer from excessive overthinking, and now I can't quite get to a beach the way I used to be able to, I do find some quiet in meditation. Nothing serious, I just grab a guided meditation from YouTube and shut everything else out for a while. Sometimes, my brain is still too busy (I think this has actually just inspired a new post for me to write about lol!), but mostly it works. It gives me a way to visualise being somewhere else - somewhere relaxing!
RE: The hike talk-partner