Anything which collapses suggests there is not enough energy to hold a structure together - in this case spiritual energy. When an object in dreams collapses we need to be aware of situations in our lives which are damaged or under threat if we do not take care. Seeing a person collapse suggests that there may be a health issue around which needs attention. If a barrier or wall is seen to collapse without assistance it signifies that two aspects of life are coming together and there is no longer need for division.