And if a person were given all of the world and what is in it, it would not fill his emptiness.

There is no captive in a worse state than the one who is captivated by his worst enemy (Shaytan) and there is no prison which is tighter than the prison of hawa (desire) and there is no bond/fetter more strong than the bond of desire. How, then, will a heart which is captivated, imprisoned and fettered travel unto Allah and the Home of the Hereafter?

Doom comes about because of neglecting to evaluate one's self and because of just following one's whims.

The heart will rest and feel relief if it is settled with Allah. And it will worry and feel anxious if it is settled with the people.

One of the most beneficial of remedies is persisting in du’a.

The keys to the life of the heart lie in reflecting upon the Quran, being humble before Allah in secret, and leaving sins.

If a man's patience is stronger than his whims and desires, then he is like an angel, but if his whims and desires are stronger than his patience, then he is like a devil. If his desire for food, drink and sex is stronger than his patience, then he is no better than an animal.