Financial issues are extremely stressful and put a huge strain on people's lives in general, don't beat yourself up for it. (Won't really help the situation)

Like another commenter said if you and your wife have web dev skills I'd try going that route while you build up your business. Also idk what country you live in but do some research on government subsidies (food stamps etc...), those should at least be able to put food on the table for both of you no matter what.