Hey OP.
I'm
really sorry. It's not easy to leave. Especially after ten years together, however mediocre. You've probably done a lot of justifying his behavior and issues within the relationship over time. It's easy to get caught where you are and stay there. Lots of people do.
I have to agree with previous posters and reaffirm that your actions now are setting up your child's perception of marriage. Have the you and your husband attended couple's therapy together? Is he being verbally or emotionally abusive? Is this really new behavior, or has it just reached a climax?
From what you've shared it doesn't sound like he is even getting help from the right source, and it is an undue burden financially. Therapy does take time, but you can usually see progress pretty early on.
As a woman who has had to leave a situation to another- don't be afraid to ask for help. Don't wait to leave until everything is perfect if you need to leave. Keep pursuing the ability to support yourself, but worst comes to worst there's probably a friend, a family member, or a shelter you can stay at until you're able to go solo. Evenwhen you feel completely isolated there is
somewhere you can get support.
I understand how emotional and challenging this must be, but
it will get better. The only way that can happen is if something changes, and if that change isn't in the form of your relationship improving than it may be in your best interest to head down a different path. Be aware that even if you cannot afford therapy now, it is definitely something to invest in when you can. It's often an instrumental part of the healing and growing process as you work through your experience. Don't be afraid to try more than one type or person until you discover the right fit for you.
I hope you're able to reach peace soon, land a great job with full health insurance benefits, and secure a safe residence where you and your child can move forward, if that is what you choose to do. There's always the possibility that your husband may get better, but once you have tried everything you can to support him and save your marriage, it isn't your responsibility to drown waiting.
I see you live in Florida, it's possible your local library can help guide you to resources. Here are two websites I found on legal aid:
https://portal.hud.gov/hudportal/HUD?src=/states/florida/homeownership/legalaid
https://www.floridabar.org/public/probono/
Depending on the complexity of your finances and property, you may be able to do the paperwork on your own with minimal assistance from an attorney.
At the end of the day, only you know yourself and your marriage. My gut is telling me you wouldn't have shared here if you weren't pretty sure something is very wrong. Sure, people go through rough patches. Marriage is hard. But there's a distinct difference between a behavior pattern and a temporary issue. It sounds like you want more for yourself and your child. If that's the case, don't let fear of the unknown stop you from getting it. The other side is usually much better, as I'm sure many ladies on here could tell you. Hang in there. <3