Failed entrepreneur, broke, unemployed, now taking care of aging parents. Help.
Here's what you need to do.1 - Practice humility and drop the attitude. Stop feeling sorry for yourself.
2 - Come up with a plan to have a net worth of $0 in 18-36 months -- owe nobody anything. If that is impossible to conceive of, make sure that you are exploring all avenues -- including bankruptcy.
3 - Get off the couch. Establish social connections. Go to church. 
Volunteer somewhere. Join a book club. Work in a coop. Do something.
4 - Build your relationship with your parents. Don't "manage" them. Easier said than done, of course.
5 - Work. Anywhere.Sorry to sound like an asshole. Live for the present and don't worry about the future until you have fixed some of the stuff going on now.Print out your post. Your goal shouldn't be starting a company -- on December 8, 2011 you should be able to look back on today and be able to say that life is better, and that you refuse to go backwards again.