M.S.
We bought a cheap digital clock at Target and told my son that he could not get out of bed until the first number was "7". We put a picture of the number 7 above the clock in case he forgot what it looked like. It took about a week of walking him back to his room and showing him that the clock did not say 7 but after a week a he got it. At first he would just lay in his bed awake until 7 but now he actually sleeps until 7 or even past 7. Hope that helps!