What It Means to "Walk in the Light"

Jesus promises us that if we walk in the Light like He is in the Light that by means of the Cross, our sins will be forgiven us. But what does He mean by walk in the light? In part, it is agreeing with Him about sin and joining Him by fighting against it. Second, it is a sorrow over the sin that is in our life, but a joy knowing that Jesus has the power and the will to remove it. Third, it is a recognition of sin for what it is, that is, its outward and inward working. Lastly, it is the allowance of the Spirit of God to pick up were we are weak to purge sin both at the conscious and unconscious level.