It is seldom that any of our bad habits or flaw disappear by a mere process of natural extinction. At least, it is very seldom that this is done through the instrumentality of reasoning .. .or by the force of mental determination. But what cannot be destroyed may be dispossessed - and one taste may be made to give way to another and to lose its power entirely as the reigning affection in the mind.

The only way to dispossess the heart of an old affection is by the expulsive power of a new one ... It is only .. when admitted into the number of God's children, through faith in Jesus Christ, that the spirit of adoption is poured out on us - it is then that the heart, brought under the mastery of one great and predominant affection, is delivered from the tyranny of its former desires and the only way that deliverance is possible

Thomas Chalmers - The Expulsive power of a new affection