You are in good hands, plenty of technologists here (it's an online forum)
There's a million ways you can matter.
May I say, your well-to-do family, and then marrying someone who could make buck, might have made you too trusting that they would take care of you and too passive. Well, that's over now, and you can see that now - someone here has the sig "The best thing about hitting rock bottom is that everything now seems freaking awesome". You have the genes to get ahead, as your family was well to do. But infidelity, divorce and everything can really ruin a family.
How do I know? Well, I came from one of those well-to-do families myself, what I like to call "nouveau poor" (as opposed to nouveau riche)
- I was from a well to-do family as well - everything was plotted for me as a child, down to the university I'd attend, but my dad became a WH and then they were divorcing and then my mom had to go out in the world and make do, then she died and I ended up with my maternal grandparents who could only really afford room and food. It happened during my early teens so I saw and felt the transformation. As a result, I became a pull-yourself-by-your-bootstraps kind of person because of it. But I remember the carefree days still, and I remember that pain and that despair, of wealth and opportunity lost. I really do. Incidentally, today that's what drives me to achieve, and why I haven't lost it all yet even through my WW's A.
For budgeting, I like http://www.youneedabudget.com/ - or any other budgeting program. It's tough, I keep it open most of the day and use it on the phone to make sure I never miss anything, but it's helping a lot with the adjustment.
Now on the Guiness thing... Remember when you first became a betrayed spouse (BS)? Did you lose all your hobbies because of the shock (happened to me)? Do you remember that feeling? Well, now that you have lost the narcissistic asshole, maybe you can remember that feeling and stop drinking for a bit. Or slow down. Just don't think about it so much, don't make it your go-to cure. If you feel horrible go to a gym instead, or just jog - you'll release endorphins which will be almost like a high and you'll get your head clear. I remember I started going to walking trails off-town on my own with my headphones after D-Day. I'd set up a playlist with the most "arrrgh! breakup" songs (both positive and negative) I could find and I'd just sing my heart out while walking in the middle of nowhere, where I could yell those stupid lyrics and cry while doing it and nobody could hear me do it. If I felt like shit I'd run until exhausted. It was very healing.
In a sense having the kids makes it both harder and easier. I can't go on a downhill spiral. I can't abandon my kids without a father figure. Maybe you need to find a place to volunteer? Find a group at church or at the local shelter where there will be people you can help, so you know you matter?
What I mean is, find your own healthy way of coping and feeling better. It's in there somewhere. You wanted to be a journalist so you're pretty good at writing - do you keep a diary? I wrote on that freaking thing until I was blue in the face (my brother is a journalist and lit major) and I've slowed down but still occasionally do. Find your passion. You don't have to make money in it if it's going to be therapeutic. And who knows? Maybe you organize it later and it becomes a book! You never know. Photography and writing is all you need for a compelling piece, and the publishing tools are easy to get and cheap to produce. The world is changing, and that's difficult, but it is giving the creative types direct control over their product. So think about what you can write from your heart, and how it will resonate with others. Self-publishing is a thing, you know. Sure, you have to get a day job in the meantime, but JK Rowling wrote Harry Potter in a freaking coffee shop!
You matter. What's in your heart matters to you and matters to us here - because we are in this together. Some of the best writing comes from this kind of feelings and you know it. All you have to do is find yourself. You're in there. Not only you, but the best version of you. You just have to let it out.
Sorry to unload so much at the same time. But I want to show you you matter. It's all on the attitude.
Hang in there, it really does get better. Or so I'm told