Your to-do list is pretty straightforward:
1) Put your failed startup aside.
2) Find a job ASAP.
3) Try to save your house. Your family would need it. Beg your bank to give you ~extra month until your next paycheck.
4) In about a year you may return to thinking about another startup. Take another year or two to think it over, accumulate some funds, do some part-time research and then jump into your new startup again... or not. Being an employee until you retire is also a good choice.