How can a man cleanse his way? By taking heed unto Your word. And we saw in James where James says, "Be a doer of the word and not a hearer only." He is saying once you see from the word of God who you are and see your need for Christ, that you need to respond. You need to realize who you are and not be a forgetful hearer. And so also, the psalmist sees that he needs to respond to the word of God. That is how a man cleanses his way. Not by walking perfectly because we cannot; but by responding to His word our way as cleansed. Jesus said to the disciples, "You are already clean through the word that I have spoken unto you."