When you become a mother, people tell you how great it will be but to also be prepared for the dirty diapers, a messy house that seems to never get cleaned, stepping on toys, sleepless nights, etc. All of these things come with being a parent, but that doesn't mean they aren't hard.
However, the hardest part of being a mother is that you can't keep them little forever. Those younger days should be cherished because before you know it, they'll be gone.