If you dreamed of being invisible, the dream interpretation is that you desire to hide yourself from public view. You either have low self esteem, or have done something which made you feel shy, in fear of being exposed to the world.
You might be in a hard position and wish to hide away. To resolve this kind of issue you should think about how you can get help. Seek external help if you are really in a tight spot.
If you had thought of doing something immoral or wrong, you might have wished to be invisible, so that you can hide your action. Again, try to look into external resources for assistance.