Am I Living a Lie?

How do I know if I am living a lie? 1 John 1:6 says that those who claim to have fellowship with God but yet live in darkness are living lie. So ask yourself, are you living in darkness, but claiming fellowship with God? Titus 1:16 gives us an example of a church who was doing this - "They profess to know God, but they deny him by their works. They are detestable, disobedient, unfit for any good work." Does my worship on Sunday match my actions and attitudes Monday through Saturday?