Can a person with only a high school education and no job or achievement be considered successful?

Some folks stay at home for noble reasons (keeping small children, medical condition, volunteerism, etc.) but can a person with minimal education, no history of achievement and no employment (for so long that he/she may actually be unemployable at this time due to a complete lack of skills) be considered "successful" in any way?

Sure. They're called Rappers.

You do not need an education to make something out of yourself. You only need a brain and ambition.
Absolutely.
Successful is how happy you are at the end of your life.
If you're laying on your deathbed, and you don't wish anything went differently, you're successful. You achieved life's success.