In the moment, {something} may not be very fun.
A wailing toddler at 3:12 am. The post-school but pre-bedtime meltdown. The epic travel day with delays and schlepping luggage and no naps. Those first 21 days.
In the future, eventually, we look back fondly on this stuff.
Maybe just one day later when the travel chaos is over. Maybe hours later when you remember holding a scared toddler on a rocking chair last night. Maybe after a full year of parenting when days 0-21 now feel like a blur and a dream.
Ask someone on their death bed how they feel about a rough night of sleep or a long travel day with kids.
A good rule of thumb: if future you will look back fondly on this moment, just embrace the moment now.
