The temple garment, like the Holy Ghost, is the ultimate protection. Its a constant reminder of why we're here and what everything is about. It helps us to remember Heavenly Father's love for us and what Jesus Christ did for us when He was fulfilling the Atonement. It's like a constant embrace from our Father in Heaven, telling us that everything will be okay.
I have the opportunity for this type of reminder everyday when I choose to live worthy of the companionship of the Holy Ghost. And knowing that this reminder could be even greater after I have the opportunity to go through the temple is something that I can think of constantly in order to help me work towards the temple and recieving my endowments and someday, even a temple marraige.