person A: I really_comma_ really need to leave my job because it's making me miserable_comma_ but I'm afraid to make a big change.  I'm worried about financial stability for me and my kids_comma_ and nervous about leaving a known quantity for an unknown.
person B: I feel for you. My girlfriend is in the same position. Luckily we don't have kids to complicate things_comma_ but her job wears her out and it doesn't seem like she can physically or mentally keep up with it. Kids just make it so that you feel you have to do it until you die_comma_ no matter what.
person A: Yes.  And the tricky part is that you can choose to stay in the miserable job for financial/life stability_comma_ and then be crabby and unhappy around your kids_comma_ or you can take the risk and maybe be in a worse financial place but be happier at home.  It's tough.  
person B: At least it sounds like you're giving it a lot of thought. You sound resilient. Most people would just quit or get fired_comma_ or not even realize the negative impact it's putting on their children. You seem very self-aware_comma_ so I'm sure you will be able to figure out the best decision for everyone involved. Good luck!