What Causes Difficulty In Falling Asleep Unless Tired?

This last week i have been having trouble sleeping. When i get tired i can sleep but i wake up shortly after and spend the rest of the day and night not tired at all and unable to fall back asleep. This is the sixth day that ive gotten almost no sleep and i am very frustrated and sad. almost fear night time now because i know that i will be staying up all night unable to sleep. I wake my mother up more then once a night complaining that i cant sleep but she wont let me use sleep aids to help and now i feel like im never going to sleep again. Is there any way i can possibly sleep?