The shadow is one of the most powerful elements of depth psychology and dream work. It relates to the parts of your psyche that you wish weren’t so, prefer to keep hidden, or feel shame about.
If your dream contains the image of a literal shadow, consider the thing that is creating the shadow. Whatever the object is, think of the shadow as the darker side of whatever the thing itself means to you.
[1]Strong shadows in your dreams indicate pessimism and the possibility of failure. However bright your prospects seem, you will still be conscious of the fact that things could go terribly wrong.
[2]