Yes, it worked for me, and my W was dead set on divorce and had been planning it for a few months with an IC, had a plan all worked out, was cheating, etc. and we have 3 little kids and a 17 year relationship. There are no guarantees, but it did work for me. It was brutally hard to do it right, took tons of one-sided effort, etc. Now that she's back however, it's not all rainbows and sunshine, the hurt will last for a long time regardless of the outcome.
Naturally it depends on the personalities involved, and how bad the marriage got before it fell apart. Our marriage never really got "bad", we never argued, parented together well, agreed on most things, were not abusive or insulting to each other, etc. Obviously the worse things were before it fell apart, the more time and effort DB will require...
--Accuray
Married 18, Together 20, Now Divorced M: 48, W: 50, D: 18, S: 16, D: 12 Bomb Dropped (EA, D): 7/13/11 Start Reconcile: 8/15/11 Bomb Dropped (EA, D): 5/1/2014 (Divorced) In a New Relationship: 3/2015