Fighting Sin With The Gospel, Not the Law

In your fight with sin, it is critical to make sure you are fighting in a gospel rather than legal way. As Walter Marshall writes,

“Understanding the true way of sanctification is absolutely critical for living a holy life in your Christian life. You will not be able to successfully live a holy life unless you use the means God has given you to pursue this holy life! God has chosen and ordained the means of salvation and sanctification that will give Him all the glory! These are the only means that he will bless in your life. He will not crown any man who strives, unless he strives in God's strength.
(II Timothy 2:5) (The Gospel Mystery of Sanctification).