I really feel for you. I too have much guilt over how I handled my career and my family's financial health. After I got here and endured months of W's spewing, accusations, etc Did I realize that it was not all of my fault. When W quit couples therapy it was because the Dr. was not buying her sob story and told her she was as much to blame.
So yes, you made mistakes - some may be harder to recover from then others - you will recover.
Get a modest financial plan in place and follow it. Don't try and take on too much. When other parts of your life are in chaos money problems magnify.
EA are brutal - I know.
The best advice I got from the DB books was to do things differently. It changes your outlook and opens up new horizons. If you normally wear jeans - switch to dress pants. If you buy your coffee from Starbucks - take a thermos, If you shop at Walmart go to Target.
I assure you small amounts of sun will pour into your dark days.
M:50 W:53 MR:20 D:21 S:17 S:11 BD-Sept 2015 Suspected PA Sept 2015-Confronted W & OM Dec 2015 Actually EA In house Sep:Jan/16-May 2016 W moved out:May 22 2016 OM-Intro Oct/17-On scene July/Aug 2017