I found this quote in an article in Christianity Today last month and it has been swirling in my brain ever since: "Be killing sin, or it will be killing you." -John Owen, 17th Century Theologian.
There are times when the Christian life is painted as being only about the fight against sin, and about coming to terms with our own selfishness. The equal and opposite error is to think lightly of our sin. You can argue for hours about whether the sin in our lives is a result of the devil or our own flesh or you could blame God who made us this way, but the reality is that sin desires to control us, and we can't let it. If we don't actively resist the urges in our own hearts to turn away from God and towards sin, we will be losing, and dying. We can't be indifferent or neutral towards it.
As we begin the season of Lent today, when we traditionally take time to examine our lives and the sin in it, may you find the strength, by God's grace, to kill, or be killed.