I don't have a problem going to sleep.

I have a problem not being able to control my body while I'm asleep.

I suffer from bruxism as a consequence of my epilepsy which has recently changed in character from grinding what remains of my teeth to slamming my jaw shut in my sleep.

I have already bitten deep into my bottom lip in my sleep and last night sheered the side off of one of my teeth.

I have an appointment with the dentist on Tuesday.

The Wicker Man would probably be more appropriate.