Juggling presupposes a learned response and an expertise which we may need spiritually to balance our lives. The image of a juggler or of someone juggling suggests that we need to keep control of our own emotions or of those around us. In waking life we often find we have to carry out a number of tasks at the same time. This may translate in dreams as juggling, The colour of the balls may help us to interpret the relevance. You might like to consult the entry for Colour