Is our existence cyclic. Is it always coming back from darkness to light and light to darkness?
Yes, the cycle of birth and death, then you can step out it and that is liberation. Once you snap out of it, you like to go and play a game. Now it is not a serious issue for you, it is just a game, and it your own game.
Before, you think it is a struggle and a war, but when knowledge dawns, you find it is all a game. Nothing whatsoever can draw fullness away from you because you know that playing in mud for a little bit does not really make you dirty, and it just gets washed out when you take a shower.
Nobody grieves getting wet. Suppose you put your feet in water, you won't say, "Oh, my feet are wet!" Come on, once you take them out, they dry out. But to get to this maturity takes some time.