What habit prevents you from sliding into the abyss?

The Broken Windows Theory of economics states that all broken windows should be fixed, and police should crack down on perpetrators of other such highly-visible signs of run down. This same theory can apply to habits.

Examples

  1. You may need to make your bed, because an unmade bed seeds an unkempt room.
  2. The first dish in the sink is like a nucleus that pulls additional dishes inward.

Source