Oxygen – Dreaming about oxygen is a symbol of the element we most need to sustain life. If you dream that you are not getting enough oxygen when you breathe, or that you cannot breathe oxygen, this indicates that you lack something in your life which you need to survive and thrive. You may not be getting enough affection in your relationships, or you may be floundering at your job and not know how to succeed. Of course, it is also possible that you are physically having a hard time breathing in your dream. You may be suffering from sleep apnea, or it may be that your bedroom becomes very stuffy at night with low levels of oxygen. Try opening a window to get more oxygen into the room, and if you find yourself waking up exhausted and unrested, you may need to be evaluated for sleep apnea.