Every day is important. Each and every moment is significant - the small ones and the big ones. Don't forget that. Document what you can. And print your memories. Save them. Treasure them and keep them close. Because in a blink of an eye those babies are celebrating their first birthday. Or in 3rd grade. Or thirteen going on thirty. And you have no idea how you got here. You have no concept of how to keep up with them and stop time from slipping through your fingers. It's like holding water in your open hands.
If you asked me - even before I was a professional photographer - I would have told you the same thing I would tell you today: take those photos, print them out, save them, and honor them like the priceless treasures they are. That way, when you can't remember what silly face they made when they were 2 or the way their sweet lips looked curiously, the photos will at least give you some way of finding that memory you tucked away for all those years ago.
So capture it all. Those precious first days of school. Homework in February. Celebratory swim meets. Ordinary afternoons. They are all significant.
They are all worth remembering.