"Have you 'renounced the hidden things of dishonesty' - the things that your sense of honour will not all to come to the light? You can easily hide them. Is there a thought in your heart about anyone which you would not like to bring into the light? Renounce it as soon as it springs up; renounce the whole thing until there is no hidden thing or craftiness about you. Envy, jealousy, strife - these things arise not necessarily from the disposition of sin, but from the make-up of your body which was used for this kind of thing in days gone by (see Romans 6:19 and 1 Peter 4:1-2). Maintain a continued watchfulness so that nothing of which you would be ashamed arises in your life."
Oswald Chambers, My Utmost for His Highest
(Comments: There are many, many things that are hidden in my own heart. It is not that they do not spring up, it is that I do not renounce them as soon as they do come up. That is where I, at least, get into trouble, by allowing them to remain in my consciousness instead of immediately ushering them out the door.)