To dream that you are entering through a door signifies new opportunities that are presented before you. You are entering into a new stage in your life and moving from one level of consciousness to another. In particular, a door that opens to the outside signifies your need to be more accessible to others, whereas a door that opens into the inside denotes your desire for inner exploration and self-discovery.
To see an opened door in your dream symbolises your receptiveness and willingness to accept new ideas/concepts. In particular, to see a light behind the door suggests that you are moving toward greater enlightenment/spirituality.
To dream that the door is closed or locked signifies opportunities that are denied and not available to you or that you have missed out on. Something or someone is blocking your progress. It also symbolises the ending of a phase or project. In particular, if you are outside the locked door, then it suggests that you have anti-social tendencies. If you are inside the locked door, then it represents harsh lessons that need to be learned. If you dream that you are bracing a door with your back, then it indicates fear of what is ahead for you. You are afraid of confronting something or someone.
To dream that you are locking the door suggests that you are closing yourself off from others. You are hesitant in letting others in and revealing your feelings. It is indicative of some fear and low self-worth. If someone slams the door in your face, then it indicates that you are feeling shut out or some activity or that you are being ignored.