This takes no planning unless you live in a concrete jungle. Then you will have to find a park or lawn somewhere.
All it takes is remember that this moment is all you have, purposely slowing down and enjoying it.
You might want to have a blanket or lay a jacket on the ground under your torso, but other than that, it is only a matter of being aware, being in the moment, and taking the opportunity that the night sky presents. If you want to see a lot of stars, and you are in the city, you might want to find a place in the country to do your star-gazing.
