To Finish or Not to Finish

So...the whole "starting a blog" thing has kinda got my brain itching to write again( imagine that). About 2 years I started writing a book(for self-therapeutic purposes) and have worked on it sporadically ever since. The book itself, except for the ending is finished, and I have already completed one round of editing. And there I've stopped. It's not that I have writer's block...I mean, the book is for the most part finished, and I would LOVE to get it published. I guess what I'm trying to figure out is if I have the emotional fortitude to pick through the topic of the book again. 

See, the book, ironically enough, closely mirrors some of my own personal experiences, which were at the time were some of the most painful things I've ever experienced. Being the person that I am, I used writing as an outlet for some of the surprisingly strong emotions I was feeling. Am I now emotionally distanced enough to go through the book again without being pulled back down into the rabbit hole of dangerous and life- threatening emotions that inspired it's writing in the first place? Am I? Or should I leave it as it is? Be grateful that it helped through a rough patch, see it for what is...a novel whose sole purpose was to help me keep my sanity, and leave it at that?

What do you think world? Should I blow the dust off of my trusty blue binder, pick up my favorite gel pen, and finish what I started? 

P.S.

If I get brave enough, I may post a few excerpts.