If you took a shower in a dream, then such dream indicates the new beginning of your life, but only in those cases if the water was crystal clear. To be in a shower where the water is dirty and unclean, denotes to the state of the mind which has not been cleared up. The muddy water also promises small unpleasant changes. To take a shower while wearing all of the clothes indicates the changes you have made with yourself, but not the inner ones. On the other hand, the dream in which you wore of the clothes, shows the wall you have made between yourself and others.
Read more about dreaming of Shower in other dream meanings interpretations.