Here’s a possible way to fill in the blanks with the given words:

I’ve tried nearly everything to (1) **cure** my insomnia, but nothing works for long. I started going to the gym, but it didn’t help me sleep, it just (2) **made** me more exhausted. I have a fairly healthy diet and I don’t drink coffee after 4 p.m. anymore. I’ve (3) **tried** relaxation CDs, hypnosis, online support groups – I even bought a new bed. I don’t want to start taking sleeping pills because I’m (4) **terrified** of becoming addicted to them. Perhaps it’s time for me to (5) **accept** that insomnia is part of my.

So, the filled in sentences would be:
(1) cure
(2) made
(3) tried
(4) terrified
(5) accept