I sympathise with your position. You have put your life on hold in the hope that what you have worked for will work out. First thing is don't beat yourself up, sometimes people fail. The person who never failed never did anything. And many having learned from the experience become a success.
Not knowing your business or depth of the debts or the value that can be salvaged I can't tell you for sure. You are probably the best judge of what the business is really worth if everything is sold off. The important aspect is to be up front, and do the job right. The process is to try an get as much value from the business as possible to pay suppliers, they will suffer and at times it may not be pleasant but at least you will be handling it in the correct way, managing an orderly closing of the business. The first thing is you need to speak with the accountant and another business advisor if you have access to one and assess the balance sheet to understand if the business is insolvent or you are suffering a sever cash crisis. If insolvent you are obliged to cease trading, if the latter there may be value in the business.
Remember no one can kill you and there will be a time in the future that you will look back and remember the good times, when a sale gave you a buzz, when doing something for the business gave you a buzz and maybe, just maybe you might try again. Lots have and lots have succeeded second or third time around.