Ok i know i am a little obsessed by this theme but i feel its because huge shifts are taking place not just in me but in our collective consciousness as we shift into a new level/higher vibration lots of stuff is coming up to be cleared out and it can be a painful process so i think the more that we can focus on light and light filled thoughts the better and remember that essentially:
"We are all beings of light,
Just as the sun is the centre of our universe,
radiating its life giving energy down onto the earth,
light is also the substance of man's spirit, his soul,
it is the silent inner spring from which all love, compassion and creativity flows"