Darkness is nothing but absence of light. You just need to light a candle & darkness is gone. Darkness has no real existence. Once a person saw in the dark that there is a snake in the room but on switching on the light, it turned out to be a rope only.
Now here below is a verse from Bhagavad Gita that tells us that in this whole creation, unreal has no existence, and the real (God) never ceases to be. So we should always turn our mind towards God who is the only reality & truth.
Bhagavad Gita Chapter 2
TEXT 16
nasato vidyate bhavo
nabhavo vidyate satah
ubhayor api drsto 'ntas
tv anayos tattva-darsibhih
nabhavo vidyate satah
ubhayor api drsto 'ntas
tv anayos tattva-darsibhih
SYNONYMS
na--never; asatah--of the nonexistent; vidyate--there is; bhavah--endurance; na--never; abhavah--changing quality; vidyate--there is;satah--of the eternal; ubhayoh--of the two; api--verily; drstah--observed; antah--conclusion; tu--but; anayoh--of them; tattva--truth;darsibhih--by the seers.
TRANSLATION
Those who are seers of the truth have concluded that of the nonexistent there is no endurance, and of the existent there is no cessation. This seers have concluded by studying the nature of both.
So let’s seek truth by praying regularly to Krishna. By such praying, Krishna will remove darkness and enlighten our mind!