"Despise not the chastening of the Lord, nor faint when thou art rebuked of Him." Hebrews 12:5
It is very easy to quench the Spirit; we do it by despising the chastening of the Lord, by fainting when we are rebuked by Him. If we have only a shallow experience of sanctification, we mistake the shadow for the reality, and when the Spirit of God begins to check, we say - oh, that must be the devil.
Never quench the Spirit, and do not despise Him when He says to you - "Don't be blind on this point any more; you are not where you thought you were. Up to the present I have not been able to reveal it to you, but I reveal it now." When the Lord chastens you like that, let Him have His way. Let Him relate you rightly to God.