When dealing with sinful habits the real moral and spiritual danger is perhaps not the occasional slip or fall into the behavior, but giving into discouragement, despair, or the doubt that God’s love is abiding that can lead to scruples.
The question of being a Christian is not whether to be a ‘saint’ or a ‘sinner,’ but of deciding what kind of sinner you want to be; the sinner who lets sins lead to discouragement and an increasing selfishness, or the sort of sinner who allows the experience of sin to lead to humility and an abiding awareness of the immense mercy of God, a mercy which one can then radiate to others.
Try that on for size, why don’t you?