It is often a bit of a problem if your child wakes early. While it's great that they sleep through the night you don't want them to wake too early in the morning. If they do it means it is a very long day for your child, they often can't wait for their first nap, they can be unhappy due to tiredness and it disrupts everyone else's sleep in the family. But you don't have to live with an early riser. There are a number of ways to sort the problem and if you are consistent and patient it should get better.