Investors expect most of their investments to fail. This is not a shocking situation for them, however disappointing. Whatever salary you need to live on is fa

Investors expect most of their investments to fail. This is not a shocking situation for them, however disappointing. Whatever salary you need to live on is fair to pay yourself. Anything under $100k is safe. Under $80k is ideal. It really depends on your cost of living. This is something you really should discuss with investors upfront, especially if you have high requirements. It's far more painful for you than for them. They're diversified - you're not. Return as much money as possible (sell any assets you can). Even a token amount will have some meaning. Shut the company down gracefully. Be nice to your users. Have a very frank conversation with your investors. Tell them how you feel. Thank them for their support. The way you handle your failure will largely determine how you and your investor(s) will feel about it going forward. You're not a bad person for failing. Now go succeed this time!