Melissa-
Yes, for sure there's a life after leaving. For me, it has been difficult, but things are getting better.
Early on, I read about the benefit of keeping a record of my thoughts and feelings, so I got a journal and made entries when I felt like it. Sometimes I'd record things every day for a week, then nothing for a couple of months. I tried hard to be candid with what I wrote. Now, when I get that journal out and read how I was feeling, it reminds me of how far I've come. My early entries clearly show I was not at all sure of what I was doing (ie the leaving), and I can see the doubts and guilt, guilt, guilt, and more guilt. So, for what it's worth, I recommend keeping a private journal, for two benefits: First, just putting into words feelings can be theraputic, and secondly, looking back on these days from some future point will remind you of how much progress you've made.
I also agree with others that talking with a counselor/professional is very helpful, too.
It's only been less than three years for me, and I still struggle with the guilt, and have to make effort to keep changing my thinking. Today, I'm happier than I've ever been, but look forward to growing still.
Hang in there. It will get better. You may feel like you've done the wrong thing more than once, and seeing former Witness friends will feel strange for a long time. But that, too, will pass.
Best wishes,
---Dan