This is probably my favorite image of Mary. For those of us who are Catholic, we honor Mary every day, but especially on Mother's Day. Since we are brothers and sisters in Christ, Mary is our Mother as well. Since God honored her with the greatest of honors - to be the Mother of the Savior - we honor her.
We don't worship her; that is reserved for God alone.
In my own life, Mary has been a contant source of comfort. Granted, there have been times when I've though, "Her kid was perfect; what can she do to help me??" Then I humbly remember that we are ALL her children, and we are less than perfect. She has far more worries about her kids than I do with mine.
Happy Mother's Day to all you moms, and Happy Mother's Day to Mary!