"It takes bad days to have good ones"-Tracy Little
I think this quote really sums up being with kids. Children develop at many different rates, sometimes they excel and sometimes they're behind. And if we're honest sometimes they are amazing and sometimes they get on our nerves.
But to be able to have good days, we have to have the bad ones. We have to know the difference. We have to be able to look straight through the bad days and see the good ones coming. This happens in our own lives, it happens in children's lives, and if we have our own children (or work with them) this happens a lot.