I've recently left the very same situation of 15 years...and although I'm still in the adjustment phase of the seperation, I can contest that it has brought me great peace.

The only change you can create is that for yourself. It's only a matter of time until you realize that enough is enough. I can only hope that you are much wiser than I was, listen to what your instincts are telling you NOW while it's still early, and save yourself years of misery that will only lead you to making that very same decision, anyway. Not to mention that the longer you wait, the older you are and the harder it WILL be to start over again.

I'm sorry that you're going through this.
Be your own best friend and do what's best for you.

I wish you the best.

Shangrala