If you see the railing, then it shows someone in your waking life that is going on the right track to their succession. If you see yourself to be holding on some rail, then it shows that you are looking for something stable and safe in your waking life. You do not feel fully grounded. The dream suggests to be as much careful as you can.
Railing dream meaning
Read more about dreaming of Railing in other dream meanings interpretations.