Faustina first felt a calling to the religious life when she was just seven-years-old and attended the Exposition of the Blessed Sacrament. After finishing her schooling, Faustina wanted to immediately join a convent. However, her parents refused to let her.
Instead, at 16-years-old, Faustina became a housekeeper to help her parents and support herself.
In 1924, Faustina experienced her first vision of Jesus. While at a dance with her sister, Natalia, Faustina saw a suffering Jesus and then went to a Cathedral. According to Faustina, Jesus instructed her to leave for Warsaw immediately and join a convent.
Faustina packed her bags at once and departed the following morning. When she arrived in Warsaw, she entered Saint James Church in Warsaw, the first church she came across, and attended Mass.
While in Warsaw, Faustina approached many different convents, but was turned away every time. She was judged on her appearances and sometimes rejected for poverty.
Finally, the mother superior for the Congregation of the Sisters of Our Lady of Mercy decided to take in Faustina on the condition that she could pay for her own religious habit. Working as a housekeeper, Faustina began to save her money and make deposits to the Convent.
On April 30, 1926, at 20-years-old, she finally received her habit and took the religious name of Sister Maria Faustina of the Blessed Sacrament and in 1928, she took her first religious vows as a nun.
Learn more on St. Faustina Kowalska: http://www.catholic.org/saints/saint.php?saint_id=510