We do not get a chance to say much. More importantly we do not get a chance to share often if at all what is or has gone on in our lives. Thus we are sure that no one knows us. We are not real sure that we know ourselves.
That is why listening to someone tell about themselves is such a gift. It helps them process verbally things they may not have previously thought through and it encourages them that someone is taking the time and interest to actually listen and respond.
It is not hard. You just have to pay attention.