DD has always been a good sleeper likes regular bedtimes and routine. Recently she has found it difficult to get to sleep and I can't figure out why. We've tried later bedtimes, earlier bedtimes, reading etc. but still she ends up coming downstairs every 10minutes until quite late saying she can't get to sleep meaning she's often not getting to sleep until late. She says she is not worried about anything and is otherwise happy with school and friends etc. I think it's just become a habit now and we need to break the cycle. We then have grumpy moodiness the next day and I'm worried it will impact on her at school. Any one with similar experience with any ideas how to resolve this?