Know Thyself. All else will be known to thee of its own accord. Discriminate between the undying, unchanging, all-pervading, infinite Atma and the ev… - Ramana Maharshi

Truly there is no cause for you to be miserable and unhappy. You yourself impose limitations on your true nature of infinite Being and then weep that you are but a finite creature. Then you take up this or that sadhana to transcend the nonexistent limitations. But if your sadhana itself assumes the existence of the limitations, how can it help you to transcend them? Hence I say know that you are really the infinite, pure Being, the Self Absolute. You are always that Self and nothing but that Self. Therefore, you can never be really ignorant of the Self; your ignorance is merely a formal ignorance... Know then that true Knowledge does not create a new Being for you; it only removes your "ignorant ignorance." Bliss is not added to your nature; it is merely revealed as your true and natural state, eternal and imperishable. The only way to be rid of your grief is to know and be the Self.

Surrender is giving oneself up to the original cause of one's being. Do not delude yourself by imagining this source to be some God outside you. One's source is within oneself. Give yourself up to it. That means that you should seek the source and merge in it. Because you imagine yourself to be out of it, you raise the question, 'Where is the source'?

15. As in the night when the sun is not present, one sees the light in the moon, the man who is not present in the heart, sees merely the mind.