What was St. Teresa famous for?

She was a nun in the Carmelita order in Avila, Spain and a mysticism writer. She is often depicted on the moment were an angel came down to her and pierced her heart with a fire arrow filling her being with tremendous joy. She also helped establish a lot of monasteries and convents throughout her life. Her most famous quote is probably "Let nothing disturb you, let nothing scare you, everything passes, God doesn't change, patience achieves everything, for he who has god lacks nothing, only God is sufficient"