Realisation is our nature. It is nothing new to be gained. What is new cannot be eternal. Therefore there is no need for doubting if one would lose or gain the Self.

If you go on working with the light available, you will meet your Master, as he himself will be seeking you.

Willpower should be understood to be the strength of the mind, which makes it capable of meeting success or failure with equanimity. It is not synonymous with certain success. Why should one's attempts always be attended by success? Success breeds arrogance and man's spiritual progress is thus arrested. Failure, on the other hand, is beneficial, inasmuch as it opens his eyes to his limitations and prepares him to surrender himself. Self surrender is synonymous with eternal happiness.

Apart from the body does the world exist? Has anyone seen the world without the body?

You are awareness. Awareness is another name for you. Since you are awareness there is no need to attain or cultivate it. All that you have to do is to give up being aware of other things, that is of the not-Self. If one gives up being aware of them then pure awareness alone remains, and that is the Self.

The fact is that you are not the body. The Self does not move but the world moves in it. You are only what you are.

Concentration of the mind is in a way common to both Knowledge and Yoga. Yoga aims at union of the individual with the universal, the Reality. This Reality cannot be new. It must exist even now, and it does exist.