What are dream selves and how do you awaken?

They are Game Constructs- Projections of your body made by the Game and asleep in either Prospit or Derse. They’ve existed for as long as you have been alive, and their Rooms are a projection of your inner psyche. They serve as Extra Lives, as an introduction to the Medium if you wake up early, and as a source of Insight and Premonition about the events that are going to happen in the Timeline.

As for the awakening, it depends. First Guardians have proven to be able to intentionally wake someone up on their Moon. Space Players are meant to wake up early after encountering the Flashy Last Frog they THEN have to remember when they deal with Frog Breeding. Some have always been awake but don’t quite know it, others wake up during certain events. They can also wake up if someone physically wakes the Dream Self up- Which will, in turn, make your Dream Body fall asleep. Finally, they can awaken if you die and someone Kisses you.