Growth on a daily scale is invisible, which is the frustrating part. Nobody watching a doorframe sees a child get taller. You see it when you compare pencil marks a year apart.
Marriages work the same way. Today will feel like maintenance: the same conversations, the same division of chores, the same small irritations in the same order.
Compare against a harder year instead. How you handle money now, or silence, or each other's families. The strength is real. It just never declares itself on the day it is being built.