Remember: A hermit is a person who withdraws from the people to a solitary place for a life of religious seclusion and to always pray.
He eventually became a travelling preacher and then a monk of the Carmelite Order where he became known for his holiness.
At age 82 St. Simon was elected the head of the Carmelite Order in England. He helped it spread throughout England, and southern & western Europe. Four years later - when he was 86 years old - the Carmelite Order was suffering a great stress. St. Simon prayed, begging the Blessed Mother for special protection. He composed a prayer to her - known as the Flower of Mount Carmel. The Virgin Mary appeared to him, along with a multitude of angels, bestowing the brown scapular of the Carmelites upon him. She told him that "anyone dying in this ... shall be saved." About a year later Pope Innocent IV wrote a letter of recognition of the visit and allowed the promotion of the scapular.
Saint Simon died in france in 1265. It is thought that he was 100 years old!!
What does it mean "whoever dies wearing this will be saved? Primarily, know that the scapular is not a magical charm, nor a lucky charm, nor a special device that will beam us into heaven! It is the 'putting on of God.' Think about how we get dressed. We put on our socks to protect our feet from being rubbed raw by our shoes - and to keep our feet warm. We put on our clothing. Well, when we put our scapular on, we are being mindful of wearing our 'God-cloak' so to speak. So, whoever dies wearing God will be saved. The Scapular reminds us to make this an intentional choice every day.
What is the Carmelite Order? The Carmelites are people who dedicated themselves to God through Mary, the Queen of Mount Carmel. Mount Carmel was the place where Elijah manifested God's greatness in the defeat of against 400+ prophets of Baal. God caused fire from heaven to come down and burn the sacrifice which had been flooded with water. (see 1 Kings 18)