Why do i bite my tongue and the inside of my lipps when i am asleep, i am very tired of this and i am affraid to go to sleep?

Occlusion : It sounds like your bite may have shifted. Ask your dentist to check your bite/ occlusion and the " wear" of your teeth.

You could be bruxing: Some people, esp those under stress, grind their teeth at night. In addition, biting your cheeks and tongue could be due to a slight misalignment of your teeth that can be sometimes remidied by some adjustments. I suggest you consider a mouth appliance that you wear at night that prevents you from grinding. See your dentist to have one of these appliances made for you. You need your sleep.

Bite problem: You may have a bite problem that may or may not be easy to correct. You could have your dentist make you a bite appliance to change the position of your jaws which would keep your tongue out of the way.

Clenching : Stress has been known to cause patient to grind or clench their teeth at night. Use of a bite guard, fabricated by a dentist, can prevent harmful forces and soft tissue biting caused by parafunctional (grinding, clenching) habits.