Is there any way to induce a deep sleep?

Basically, I have trouble falling asleep and I daren’t keep asking my doctor for Restoril ( UK brand name is Temazepam )

At this point, 40mg is enough to put me to sleep but with this kind of dosage I’m likely to become addicted within a 2 week period, I was wondering if anyone can suggest something that is similar in strength that can do the exact same job without the risks of addiction and that can render a person ( i.e Me ) deeply asleep.

I’ve noticed my eating habits have changed and I find myself losing weight and eating much less than I usually would do, Help please?