He that will find his house in good repair, must stop every chink as soon as discovered; and he that will keep his heart, must not let a vain thought be long neglected; the serpent of heart-apostasy is best killed in the egg of a small remission of care.
In the arena
Sin rarely kicks the door down. It seeps through hairline fractures you told yourself didn't matter.
James 1:14-15 traces the path plainly: desire gives birth to sin, and sin, when fully grown, brings death. The time to kill it is now, while it's small. Don't wait until the wall crumbles or the ceiling is infested with mold. Pick one thought pattern you've been tolerating. You know which one. Maybe it's resentment toward someone at work. Perhaps a feeling of envy over the success of someone else. Bitterness gnawing at your heart. Confess it as what it is, not as what it could become, but as what it already is: a crack in the wall. A desire that leads to death.