Forgiveness empties the past of its power to empty the present of its peace. - L.R. Knost

When we encourage new parents to 'treasure these moments because they don't last forever' we need to remember to also reassure them that they will survive these moments because they don't last forever.
Parenting is hard, and the struggles can sometimes feel like they overshadow the joys. Knowing that struggling is normal and will pass helps us get through the hard times so we can truly treasure the good ones.

Children don’t ‘mis’behave. They behave, either positively or negatively, to communicate. Small children communicate through their behavior because that is the only method of communication they have. Even when they become verbal, though, they still aren’t able to articulate big feelings and subtle problems well verbally, so as parents it’s our role to ‘listen between the lines’ of our children’s behavior to discern the need being communicated. Setting boundaries is not about ‘mis’behavior. It’s about guiding behavior, and guidance is something we provide through everyday interactions with our children.

But do you really believe that Jesus’ New Covenant is for everyone except children? That grace, mercy, unconditional love, and forgiveness are for adults only? The disciples made that mistake, and Jesus said to them, “Let the little children come to me, and do not hinder them, for the kingdom of God belongs to such as these.” Luke 18:16 Five