PARENTING CAN BE QUITE A HUMBLING EXPERIENCE
Parenting will humble a person. When kids grow up to their teen years, many of them spend day after day trying to tell Mom and Dad why they're soooooooo wrong and sooooooo stupid.
Ref. https://deseretnews.com/dn/view/1%2C1249%2C...60662%2C00.html
To a parent of young children close in age, this is quit disheartening. My kids already think they can pull the wool over my eyes and get away with things right in front of me. Its already a humbling experience to clean up puke from two kids in the middle of the night. When another life completely depends on you for everything and relies on you to teach them about life, it is very humbling.
Changing my first diaper was probably the most humbling experience of all. Being a parent is indeed very humbling, because all of a sudden, you give up a lot of the freedoms you enjoyed as a adult with no kids, and every decision you make is done with your kids in mind. A temper tantrum in a busy place is another example that comes to mind as a humbling experience. Humbling and embarrassing. At the end of the day however, when your child flashes a pearly smile at you, or falls asleep on your lap, it's all worth it.
I agree with all the other suggestions, but I would like to add, that when they bring you home the first picture that they've drawn with you on it smiling, is a humbling experience too!
My little girl likes to draw pictures of me and her holding hands with massive smiles on our faces, she draws one practically the same, nearly every day, but I never grow tired of seeing them-- they are special!