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

The heart becomes sick, as the body becomes sick, and its remedy is al-Tawbah (repentance) and protection [from transgression]. It becomes rusty as a mirror becomes rusty, and its clarity is obtained by remembrance. It becomes naked as the body becomes naked, and its beautification is al-Taqwa. It becomes hungry and thirsty as the body becomes hungry, and its food and drink are knowledge, love, dependence, repentance and servitude.

And to have spent the night sleeping and awoken regretful, is better than to have spent the night standing (in prayer) and awaken impressed with oneself!

As long as one is following the right way, one should never be concerned about the reproaches of those who like to find faults.

Ibn Taymiyyah lived poorly. He was imprisoned and threatened. But I have never seen anyone as happy as him.

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

Be sincere in your aim and you will find the support of Allaah surrounding you.