Hello all. It breaks my heart to read all of your stories, but I know how you feel as I was there very recently. I remember feeling misirable for years and never occurred to me that I can leave my husband. Cannot explain why, but it did not. However, once the thought crossed my mind it started growing and I knew, I knew that it will never go away, and it did not. Once you start thinking about separation it is like a seed you planted, it will grow and grow until it bears fruit and that will be your salvation. I believe that there is nothing you can do really but get ready. When the time comes and fruit is ripe it will fall off. There is time in this world for everything, and your time will come too. (OMG, once before I compared it to child birth. Well I guess the analogies are kind of the same 
).
What you are going through is normal. No matter what kind of a person your husband is, an angel or an ashole, you will feel sad, and guilty and devastated. This will not go away, I do not think it ever does completely, but over time, it will get better, little by little. Please remember, it has to get worse before it gets better though. I remember feeling like I was dying, quite literally, my insides felt like I had a terminal illness, I was certain I would get a cancer or something. I always had that sick feeling in the pit of my stomach, had it for days. This was much worse just before I told my husband and then got better for a while. I felt better after I told my kids and also, my family and friends. It felt like this big heavy weight was lifting slowly from my shoulders, my chest. Few days before he left, the day he was moving, and a few days later were the worst. My heart was racing, my blood pressure was going up, I could not sleep, I felt like I was on fire. It is all normal. You are facing a change, a dramatic change that will affect many, many lives. But ultimately, everyone will gain, trust me, even your husbands, although I do not think that they would ever admit, because in the relationship you are not happy in, nobody is, they may not be aware of that, but they are not.
I have been living apart from my husband six weeks now and it has been a roller coster. I have to tell you I do not have any practical problems, but mind you my kids are grown up (living with me though). Things have been running smoothly, much better then when he was here even. However, it is my emotions that are getting the best of me. Feeling guilty for ending my marriage, sorry for my ex for having to start a new, alone, feeling sad, anxious... Up and down my emotions go, but I never once regretted doing it. Our relationship was over years ago. I do not love him and do not feel attracted to him. Every time I feel sad I imagine him, coming closer, hugging me, kissing me, and I feel nothing. No desire, no want.
This morning I woke up alone in my bed, spread over its full size, my gorgeous, new sheets and pillows. I felt so good, so calm and restful, took a deep breath checking for anxiety to creep in...nothing. Woke up, took shower, went for a walk with my dog. Gorgeous, fall morning was unfolding in front of my eyes and I felt so good. My kids were waking up one by one, new day, new week. I was making plans for the day, meditation first when everyone is out of the house, then check my personal emails, have coffee, maybe breakfast, work, make dinner and go for my Monday yoga class. I saw no hurdle in my day, it felt so good to be alive. I wish you all, a day like this, very, very soon.
In the mean time, keep posting, keep planning, keep taking care of yourself in the best way possible. Love yourself, you can do it, you will do it, you will be free soon!!!