Well, MU is an oriental word meaning 'emptiness', which is a very good place to start. Modern terms such as 'glass half full' (or empty) do not quite hit the mark when starting a new project. It's best to start as if totally new to creating art, as every new drawing or painting is a new experience, which it always is. You will always learn something new each time you lift a pencil or paint brush.
And as a wise man once said: "A vessel is only useful when it is empty"