The Holy Spirit is gentle and loving, but Satan condemns and generates fear. How can we be certain if it's the Holy Spirit convicting us of sin or the devil seeking to hinder us?
Everything Satan says is a lie; this is why Jesus refused to get into a debate with the father of lies. The devil will never speak truth to you, only deception. We must not entertain Satan. We must not draw a chair to the table of our heart and engage him in open debate. There is nothing to talk about. In Christ, I am a child of God. I am blessed and I am a new creation in Christ.