The TOUGHEST part for me was leaving my W alone when the divorce discussions started. As a dude, I wanted to talk about it and SOLVE it. Women need a lot more time to think and feel about it. For the most part, they seem to want us OUT of their presence while they are doing that.
There are several on this message board that are many months (or more) into their situation.
The front end is always the hardest time to have patience on your part. You are in crisis, and your W has had more time to think about this than you've had time to react to it.