Sounds as though you were really determined, DraughtyWindow. Really encouraging post, thanks.
I am 5 years into a marriage which has been unhappy for the last 4 years, at least. After much agonising, counselling, convos with close friends, etc I have finally come to the conclusion that I need to end this.
I am making a plan: writing a budget for life as a single mum and trying to work out exactly how much I shall need to earn to keep us (we'll probably go maybe 50/50, or 60/40 on custody so there won't be much (if any) maintenance coming my way. However, I am hopeful that, once he calms down and readjusts, DH will stump up for his share of significant costs such as after school clubs, swimming lessons, birthday parties, etc. I can't bear the thought of DC going without these things.
I am going to get an appointment with a SHL and CAB, get the house valued and do some viewings of one-bed places where we can make a home in the immediate years post-split, until I can afford something bigger - DC in the bedroom and me on the sofa, which I am used to as DH and I have not shared a bed for some time.
I live in London, so housing is hugely expensive but, on the flipside, there are job opportunities. DC will start school in September 2017, so I shall be able to go back to work. Used to be in a very low-pay, pin-money type of occupation so will need a career change. I am looking at applying to various graduate schemes as a mature applicant, even stuff in finance, that I never would have considered previously. Just desperate to be independent. Can't live much longer like this - mental and physical health are getting worse and worse and sometimes my thoughts become very dark. I reckon that it'll take 1-2 years but I WILL get out.
Good luck everyone. Know you are not alone in your struggles, even though it so often feels like it. 