If hovering near water, this represents the cooperation between your mental / conscious self and your emotional nature.
Dragonflies are very adaptable, but also territorial. Have you been hovering around your domain too much? Or perhaps you’ve been too flexible in a specific situation.
Dragonflies need warmth and sunlight. On the dream plane, this may represent a similar physical need that manifests as depression or restlessness. Alternatively, it may symbolize the need to be more aware of the conscious, masculine, solar self.
In Japan, these are emblems of happiness and good fortune.
Among Native Americans, the souls of the departed may reside in these creatures. As such, they may be messengers from other realms communicating through your dream (see Ghost).... The Language of Dreams
This translucent winged creature flies through the window of illusion to offer you an opening to the dream world. It may comment on the condition of Maya, referring to the great illusion of a third-dimensional view of life. Dragonfly mentions the need to cut through life’s illusions.
The dragonfly is the guide into the astral or spirit world.... Ariadne's Book of Dream
Psychological / emotional perspective: We may be pursuing a dream, but without any real focus as to what we actually want out of life. Our reactions are instinctive rather than logical.... Dream Meanings of Versatile