What is the origin of the idiom "have one's hands full" and when to use it?

The phrase "have one's hands full" is believed to have originated in the 16th century, and it is a reference to the idea of being so busy or preoccupied that one has no free hands. The idiom is used to describe a situation where someone is very busy or has a lot of responsibilities to attend to. It can be used in both personal and professional contexts.