There are a number of saints named Teresa so you need to be more specific.
St. Teresa Redi is a saint but not a patron saint.
Mother Teresa's patron saint was St. Therese of Lisieux.
I can find no saint named Teresa Vickers.
Mother Teresa is not yet a saint. However, she was named as the patron saint of World Youth Day aa few years back.
Mother Teresa's patron saint was St. Therese of Lisieux.
Saint Teresa Benedicta of the Cross, also known as Edith Stein, is the patron of: against the death of parents, Europe and martyrs.
There are a number of saints named Teresa. Please be specific.
According to the Patron Saint Index the patron saints for vocations are St. Alphonsus Maria de Liguori and the Infant Jesus of Prague. There is no St. Teresa among them.
The Church requires that you do nothing special on any saint's feast day unless it is a feast of the Blessed Virgin Mary that is a Holy Day of Obligation. If Teresa is your patron saint or the patron saint of your parish, you may wish to assist at Mass that day or your parish may have special festivities planned to honor the saint.
The Patron Saint Inex lists no patron saints of bears.
Saint Lillian is not a patron saint as per the Patron Saint Index.
As per the Patron Saint Index, there is no patron saint of wrestlers. However, Saint Sebastian is the patron saint of all athletics and athletes.