When you think of purity you probably think of not having sex, but purity is much more then that. One of the definitions of purity is "The degree to which a color is free from being mixed with other colors". When a color is mixed with so many other colors it becomes disgusting and tainted. Our souls are the same way. We must be pure in not just action but in words and thoughts. Below is a prayer for purity. This week pray that prayer everyday. Also, try and go to daily mass so "when the "Bread of Angels becomes the Bread of me" in my heart at Holy Communion, seal it forever against the suggestions of sinful pleasures." Will you Take the Challenge?

Jesus, Lover of chastity, Mary, Mother most pure, and Joseph, chaste guardian of the Virgin, to you I come at this hour, begging you to plead with God for me. I earnestly wish to be pure in thought, word and deed in imitation of your own holy purity.
Obtain for me, then, a deep sense of modesty which will be reflected in my external conduct. Protect my eyes, the windows of my soul, from anything that might dim the luster of a heart that must mirror only Christlike purity.
And when the "Bread of Angels becomes the Bread of me" in my heart at Holy Communion, seal it forever against the suggestions of sinful pleasures.
Heart of Jesus, Fount of all purity, have mercy on us.