Have an object that you focus on, it can really be anything. In your dream, when you see it you automatically know where you are. You can use it for connecting with people in the dream realm. It has to have something about it that applies to physics IRL but you can manipulate in your dream. Like let's say you use a crystal and you want your friends to join you... Make everyone look at the crystal and how it only shines a certain way when light hits it. Then decide on a place to meet and try to focus on what it looks like before you sleep so you will drift into it. Maybe the place is dark and the crystal will be sitting there shining brightly. Calling everyone like a beacon. It's easy to find in the dream - astral realm and it's obvious that you're not awake so you can trigger yourself to take control

Some people can connect, some can't.