This can be hacked. Instead of sinking uncontrollably, dream three steps down and then a little landing. On the landing, recite words you memorized that are your intention, then proceed further down. Or up. But it sounded like you were going down. Remember that there's a railing and you can hold it to go back.
If you find a door, don't open it. If its a good door, it'll open after knocking.
