 You ought to know one of the signs that you're not being led by the Spirit. It's a great test to see if you're led by the Spirit of the flesh. All your thoughts are sinful. Thoughts of bitterness. Thoughts of entitlement. Of lust. Of negativity. Thoughts that are deceptive, that are perverse. Those who are dominated by the sinful nature, think about sinful things. Monitor your thoughts. Observe your thoughts. What is going through your mind constantly?