How does a Muslim protect himself from the schemes of Satan?

Question:
Shaykh Salih, Satan’s ultimate goal in this life is to divert the Muslim from the truth and tawhid (the oneness of Allah). How does a Muslim protect himself from that?

Answer:
By and by fearing sins, so that when he falls into any of them, he hastens to repent. He should not despair of Allah’s mercy, no matter how great his sin is. He should not despair of Allah’s mercy, relying on fear alone, nor should he rely on hope alone, neglecting to fear Allah’s schemes. Rather, he should always and forever combine the two, remaining between fear and hope. Yes.