Be to Allah as He wishes, and He will be to you more than you can wish for.

Happiness is attained by three things: being patient when tested, being thankful when receiving a blessing, and being repentant upon sinning.

Wasting time is worse than death, because death separates you from this world whereas wasting time separates you from Allah

Beware of every hour and how it passes, and only spend it in the best possible way, do not neglect yourself, but render it accustomed to the noblest and best of actions, and send to your grave that which will please you when you arrive to it.

O you who sold yourself for the sake of something that will cause you suffering and pain, and which will also lose its beauty, you sold the most precious item for the cheapest price, as if you neither knew the value of the goods nor the meanness of the prize. Wait until you come on the Day of Mutual Loss and Gain and you will discover the injustice of this contract.

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?

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