She wrote a memoir.
And she resisted writing it until her sister (Mother Superior) ordered her to write it. ...ah, if only someone who could hurt me would order me to write Thin Places ....
St. Therese served in a convent with several of her sisters and they would talk in the evenings about their faith, the family, their parents and how they felt about prayer. St. Therese was the baby in the family and had a great child-like faith. Her sister, Celine saw that great gift in her and knew others could benefit, so she told Therese to write down her memories of childhood, family and journey in faith. Therese resisted and admitted that she hated writing - hated the discipline, but had to follow orders ... so she wrote.
She died young of TB and after her death, the sisters printed her memoir. It was reprinted and reprinted and word of it spread throughout Europe and eventually around the world. The Story of a Soul has sold millions of copies and is still a best seller. She never lived to see the success, but her last words, on her deathbed, spoken to her sisters were, "I want to spend my heaven doing good on earth."
Many people chide me about me devotion to saints - especially my Christian (non-Catholic) friends who consider it a kind of idolatry. For those that tend to agree, please read .... Why Do We Pray to the Saints?
A saint can be your friend who prays with you, making your prayer stronger. St. Therese has always been my special soul friend in heaven and has spoken in my life. Being a reluctant writer, I always pray to her before I write anything and I pray for my writing career. I'm the poster child for the procrastinating, lazy, reluctant writer. I think she helps me.
My last book, Haunted Eastern Shore was very successful, and it was hell to write. It was released on October 1st - her feast day. The third printing (in one year) just came off the press - today - October 1st.
They say if you pray to St. Therese and ask her to answer your prayer, she'll send you a rose. I've gotten whole bouquets after praying to her for intercession.