A christian is someone in communion with the Father through the work of the Son.
We often think of faith as a series of concepts or ideas, beliefs rooted in scripture and taught through preachers, sermons, study, the Holy Spirit in our hearts.
But when it comes down to it, do we commune with God each day, bring Him into every conversation of situation we enter?
Often until you are there, things cannot be seen or responded to, and without the fellowship, often things go wrong. We are aware of it not going "right" but cannot put our finger on it.