As a short term pressure relief you could work from another location as others have suggested. Try that. If it doesn't help I suggest quit the start up for now,

As a short term pressure relief you could work from another location as others have suggested. Try that. If it doesn't help I suggest quit the start up for now, get a good job to bring in the money and and return to the business idea later on. This is assuming finances are an issue. Unless you are rich? When you have family you need to optimize for everything - wife, kids, financial and dreams, and not just for your dreams. This can be quite a juggle and a tension between your needs. However the default of the 9-5 job, the rent/mortgage paid and spending time with the family is always a stable place you can return to, and then you can be in a good space prepare yourself and your wife for your next entrepreneurial adventure. The next priority is to get you and your wife on to a stable footing, with good communication, and build a common vision for you and your family for the next 10 years and the next 20 years which may include building a business. I think talking about the next 10 years alone could give your wife a sense of security that you see yourself with her and the family forever. Staying at home with young children is stressful, and with a baby crying, dirty nappies on the floor, or toddlers throwing tantrums, the house in a mess and the husband in the way and not helping I can imagine it would be quite stressful for the wife. Plus lord knows how you concentrate and be productive, they must be in your way too. Lots of great words in this thread, but only you can decide what is best to do. You know all the facts. I wish you the best of luck and hope it all works out. I am sure it will.