Brightness in a dream can symbolize wisdom or spirituality.
If you find yourself moving toward something bright, such as a bright light, in a dream, you are attempting to gain wisdom or to attain a new level of spirituality.
Traditionally, a bright light represents movement toward the afterlife, so you may dream of a bright light if you have been thinking about death.
Brightness or a bright light in a dream can also symbolize rebirth or transformation – the beginning of something new in your life.
If you dream that your surroundings have become very bright, it can be a sign that you need more clarity regarding an issue that is affecting you in real life.