I can appreciate your concerns about sleeping aids. There's a general rule of thumb with mine. No more that 3 per week. They really aren't designed to be taken nightly. They are more to kick start you back into a regular sleeping pattern.
I give myself a time frame at night, if I don't take it by 11pm, then I am just out of luck for that night, because I do need to make sure, I am awake in the morning, due to children.
I don't always take them because I cannot fall asleep, I sometimes take them because I have troubles sleeping through the night. When I notice a pattern of 2 or more days in a row, where my sleeping if 'off', I take one. Then, I am usually back on track. They aren't designed to be prescribed as a crutch, they are designed to help bring one back to a balanced sleeping pattern.
That's where therapy, etc, can help. The not being able to sleep, is something one can work through and see what's troubling their minds.

In my case, I learned this through the pharmacy, Insurance will only cover 10 pills, per month. I could pay out of pocket and receive the other 20 that the original prescription states. And it really wouldn't be that much money out of pocket. However, it's a controlled substance. It would be flagged. Our doctors, do monitor these prescriptions.

How to use trazedone and the addiction concern, could be addressed with your doctor.