The holy spirit will speak to yoy with fruits of the spirit, while the enemey used fruits of the flesh. This is the best way to discern them. If your thoughts represent these Galatians 5:22-23 NIV [22] But the fruit of the Spirit is love, joy, peace, forbearance, kindness, goodness, faithfulness, [23] gentleness and self-control. Then that is the holy spirit speaking. If it is the fruits of the flesh, Galatians 5:19-21 NIV [19] The acts of the flesh are obvious: sexual immorality, impurity and debauchery; [20] idolatry and witchcraft; hatred, discord, jealousy, fits of rage, selfish ambition, dissensions, factions [21] and envy; drunkenness, orgies, and the like. I warn you, as I did before, that those who live like this will not inherit the kingdom of God. If these are your thoughts then that is your flesh trying to temp you