If you dreamed that the key was lost: The burdens and responsibilities related to your family may increase, you can make changes in your lifestyle that will reduce stress or increase your quality of life. To see that the key is lost in your dream indicates misfortunes that will happen to you, that your life will be turned upside down, that there will be developments that will cause disruption of the order and that your peace will be disturbed. Losing a key is also seen as a harbinger of regrets and sorrows that this person will act without thinking about the end.