Yoga suggests that deep inside us there is always light. That is why Patañjali advises us in Yoga Sutra I.36 to meditate on the light within.
Yoga Light Within You: 12 Sanskrit Words for Winter Meditations - YogaUOnline
Yoga Light Within You: 12 Sanskrit Words for Winter Meditations - YogaUOnline
Yoga Light Within You: 12 Sanskrit Words for Winter Meditations - YogaUOnline
Yoga Light Within You: 12 Sanskrit Words for Winter Meditations - YogaUOnline