I'm a big proponent of Holy living. I believe that this concept is the most important part of a Christian's walk with Christ.
A Holy life to me is one which is dedicated to following Christ's commands and NOT practicing a life of sin.
Stumbling into sin is something totally different. Everyone falls sometimes, but they get up, ask for forgiveness and keep going.
A holy life is the proof that one actually believes in Christ! Christ himself said that anyone who loves him obeys his commands.
I believe avoiding sin is the best way to keep from sinning.