Please I have a sleeping problem, and i want to change it?

I tend to sleep real late at night like at 6 A.M and not wake up until 3 P.M and it is really frustrating me. i want to be able to wake up in the morning and not miss half the day. I've tried for a week to try and change it but no success. is there a way i can change my bio clock to wait up in the morning (don't care what time in the morning) and sleep like around 10 or 11 P.M? Mature answers please. thank you:)