I have been this person. Maybe you have, too.
The know-it-all is a passionate individual. They have things to say! Others need to listen! They are excited. They really don't have the patience to listen to others. They are too busy thinking about the next thing they are going to say.
A couple years ago, I realized I was being the know-it-all preemie parent. Jack had been through pretty much every single thing a preemie could encounter (besides NEC), so I felt my voice was needed. I weighed in on message boards, gave advice liberally and freely, wrote extensively, as if I was the preemie expert, as if all our kids are the same.
Where many of us fail in this whole preemie thing is that we act as if we are the expert, when really, we are only the expert on our kid. I am an expert on Jack. I can only come to the table with my own experiences, with my own life lessons.
That is why I continue to tell Jack's story. I tell you things I've learned, but it may or may not be applicable to your own situation. I can give pointers or ideas or things that have helped or hindered, but I am not the expert. There are times where I will be quiet. I want to listen more. I don't want to be the one at the table that drowns everyone else out.