You need CBT-I, cognitive behavioral therapy for insomnia. It is a very specialized type of therapy and there is an explanation of it on this site. It’s not easy to do though, so it’s best to hire a therapist trained in this or Martin Reed, who created this website. He’s worked with people who have had insomnia for up to 30 years. My insomnia started last October and after two months I couldn’t take it any longer and hired Martin. I’m starting to get better now. I was scared like you, too. Insomnia is very scary because it feels like you have no control over it and it’s taking over your life. It’s extremely lonely too when you’re awake late at night knowing that everyone else is sleeping.
After trying several different things to try to get some sleep (sleeping pills, relaxation CDs, hypnotism, sleeping in different rooms, etc.) I finally learned that insomnia is caused by anxiety/fear. It is a learned condition, where we learn to associate going to bed with anxiety/fear. Therefore, insomnia needs to be unlearned and cognitive behavior therapy focuses on this.
Here’s a couple of good books to help you get started on educating yourself about insomnia and what can be done about it:
The Effortless Sleep Method by Sasha Stephens
End the Insomnia Struggle by Colleen Ehrnstrom
There’s hope for your struggle and it’s definitely not too late! Educate yourself and then please get the help that you need. This will give you back your life.