EMDR Therapy

Well, I start my EMDR Therapy tomorrow, can't sleep right now cause I am kinda nervous. I know it is probably gonna help, because it has had a history of high success rate, but my therapist told me that is gonna get worse before it gets better. She said I would have to go back to the hardest things... the things that bother me the most, and I may get really depressed and emotional, but that is part of it. That really scares me! The thoughts that go through my head are still so vivid even though it all happened over 5 years ago. Anyways... wish me luck!