Two things always go together in the experience of a genuine believer: 

1. a growing discovery of the vileness of self, and 
2. a deepening appreciation of the preciousness of Christ.

    "Behold, I am vile!" - Job 40:4 
    "O wretched man that I am!" -  Romans 7:24 

    "Yes, He is altogether lovely!" - Song of Songs 5:16 
    "To you who believe, He is precious!" - 1 Peter 2:7