The Self is the heart, self-luminous. Illumination arises from the heart and reaches the brain, which is the seat of the mind. The world is seen with the mind; so you see the world by the reflected light of the Self.
Nearly all mankind is more or less unhappy because nearly all do not know the true Self. Real happiness abides in Self-knowledge alone. All else is fleeting. To know one’s Self is to be blissful always.
Correcting oneself is correcting the whole world. The Sun is simply bright. It does not correct anyone. Because it shines, the whole world is full of light. Transforming yourself is a means of giving light to the whole world.
If there is anything besides the Self there is reason to fear? Who sees the second? First, the ego arises and sees objects as external. If the ego does not rise, the Self alone exists and there is no second.
Existence of Isvara follows our conception of Isvara. Let us first know whose concept He is. The concept will be only according to the one who conceives. Find out who you are and the other problem will solve itself.