Pr 29:5 A man who flatters his neighbor spreads a net for his feet.
Let's apply this to spiritual deception. The devil is like the man here who flatters you so that you will be entangled and suffer an eternal fall.
He will make you think that you are a good person, that you are not as bad as the others, that your sins are not as serious as the others, that your good works will somehow cover-up and outweigh the sinful things that you have done. He will make you satisfied with your self so that you will never, ever trust in Christ and what He did on the cross for your salvation.
Repent! Realize that you are a sinner, helpless, and hopeless in yourself to save yourself. Be roused from the intoxication of having a high opinion of yourself.