Imam Ali (AS) said, Verily the true believer does not enter his evening and morning but that he distrusts his soul, so he continues to belittle [and find fault with] it and seeks more [good] for it.
Nahj al-Balāgha #814You should know, O creatures of Allāh, that a believer should be distrustful of his heart every morning and evening. He should always blame...