What our beloved Prophet SAW said:

• "There is a polish for everything that takes away rust; and the polish for the heart is the remembrance of Allah." (Bukhari)

• "If you put your whole trust in Allah, as you ought, He most certainly will satisfy your needs, as He satisfies those of the birds. They come out hungry in the morning, but return full to their nests." (Tirmidhi)

•  "It is better to sit alone than in company with the bad; and it is, better still to sit with the good than alone. It is better to speak to a seeker of knowledge than to remain silent; but silence is better than idle words." (Bukhari)
 
• "Allah does not look at your appearance or your possessions; but He looks at your heart and your deeds." (Abu Huraira: Muslim)
• "Do you know what is better than charity and fasting and prayer? It is keeping peace and good relations between people, as quarrels and bad feelings destroy mankind." (Muslims & Bukhari)