Stairs represent your spine in dreams about the physical body. If the dream shows a problem with a step on the stairs it is about a physical problem with the vertebra that matches the step number.
Going upstairs in a dream is about activating your intellect or your spiritual side. To tell which it is, look for other symbols in the dream about spirituality, the heart or intellect.
Going downstairs is about moving your consciousness down from your head to your heart to get in touch with your feelings. You are rationalizing too much with regard to the subject matter of the dream. Involve your heart in the decision making process. Ask yourself if your heart was fully in charge of the decision or the direction of your life what would you be doing now?
Going downstairs can also be about your birth symbolizing your arrival on the ground.
