What doesn't mean to not breathe in your dream?

This dream's meaning depends on the feeling you experienced when it occurred. If you were holding your breath because you were frightened and hiding, it represents your anxiety about something happening in your real life that you hope will end without hurting you directly. On the other hand, if you felt as if you could not breath in spite of trying, it suggests that you are in a situation in real life where you feel suffocated and severely restricted in the sense of not having choices or not being allowed to do what needs to be done. Yet again, the dream might have been nothing more than a fantasy without any particular significance, since dreams are not constrained by "normal" functions and factors like breathing, time limits, gravity, etc.