Agree with the others too - now that you have to be in charge of your own finances, you'll manage your money just fine. I was in this position too, and I was terrified about how much money I would have coming in, and how I would manage to budget, having never had to think too carefully about it for 15 years.....
I made up a spreadsheet with all my income and outgoings, did the Benefits Calculator on the Tax Credits website so I knew what else I'd be entitled to, and got myself a solicitor who does Legal Aid. So far, so good!
My ExH was keen to split our assets without the help of solicitors, but already he is saying he can't give me what I've asked for (straight 50% of assets in cash, none of his huge pension), would I consider x,y, and z instead.... If I didn't have my sol saying "no, that's not a clean break, we'll hold out for what you are due" I would have probably rolled over by now and consequently ended up with an unfair deal for me and the DCs. I think a lot of men know that a lot of women would do the same, no matter how reasonable they seem or seemed in the past.
Good luck OP, and these forums are a great source of practical and emotional support when you need them :)