"When an evil thought comes to you, seek refuge in Allah"

إِمَّا يَنزَغَنَّكَ مِنَ ٱلشَّيۡطَـٰنِ نَزۡغٌ۬ فَٱسۡتَعِذۡ بِٱللَّهِ‌ۚ إِنَّهُ ۥ سَمِيعٌ عَلِيمٌ . إِنَّ ٱلَّذِينَ ٱتَّقَوۡاْ إِذَا مَسَّہُمۡ طَـٰٓٮِٕفٌ۬ مِّنَ ٱلشَّيۡطَـٰنِ تَذَڪَّرُواْ فَإِذَا هُم مُّبۡصِرُونَ

"And if an evil whisper comes to you from Shaitaan (Satan) then seek refuge with Allah. Verily, He is All-Hearer, All-Knower.
Verily, those who are Al-Muttaqoon (the pious), when an evil thought comes to them from Shaitaan (Satan), they remember (Allah), and (indeed) they then see (aright)."

(Qur'an 7:200)

The people of Taqwa, when an evil thought, or anger, or the whispers of Shaytan cross their mind, or they intend to err, or commit an error, they remember Allah's punishment, as well as, His tremendous reward. They remember Allah's promises and threats, and they turn to Him and seek refuge with Him from the Shaytaan (A'oodhubillahi minash shaiytaanir Rajeem).