I have been battling with this myself, though in my case there has been some emotional abuse. My psychologist friend recommended this book: Too good to leave, too bad to stay by Mira Kirshembaum: https://www.amazon.com/Good-Leave-Stay-Step-Step/dp/0452275350. It is helpful.

I am 4 months post divorced and read this book while we were both going to couple's counseling. This book helped clarify a lot of things that led to my final decision of leaving. I highly recommend this book too.

I've found that divorce is something you can never be 100% sure about. Even if there is abuse/drugs/etc. I was in an abusive marriage but the good times were great and kept me married and I still look back on those good times. Maybe weigh the pros and cons, tell your counselor everything, and in the end go with your gut instinct.