Step-by-step explanation:
id and ego.
id (Latin for the English "it") stands for basic desire, instinct.
kind of the hard-wired programs we are borne with. the"involuntary" wants. our subconscious mind.
ego (Latin for the English word "I" or "me") stands for the things we grew into wanting. conscious decisions about what we need or don't want to achieve an envisioned goal. our conscious mind. the "voluntary" wants.
there is a third one : the super-ego.
this represents our wants we get driven into by social pressure.
all 3 are connected in ways we are often not aware about.