I would say a 9.
I was thinking about this recently. My life may not be exactly where I want it to be but it could be a LOT worse. Growing up we lived in the poorest city in America, murder capital USA one year, lived below the poverty line, single mother making minimum wage, no phone, no car, slum lords, public housing, etc.
Now I have a nice place to live, we have an awesome extended family, great friends, I have a job I enjoy, I make ok money, we have enough food, I have a man that loves me, two healthy children, my own health, we get to go on vacations, we get to have extras, we have cable!
I try not to sweat the small stuff in life and I think it lets me enjoy life so much more!