"...he will guide you in all truth..." --John 16:13
In John 14-16, Jesus is speaking to the disciples about the great comforter (the Holy Spirit) that will come after he ascends into heaven. I've been in church all of my life, and the topic of the Holy Spirit was rarely talked about, only in reference to the Godhead. Now I see the Holy Spirit as a person (Jesus) who dwells inside all believers. The Holy Spirit will guide you to the truth, he will never lead you against Scripture. Any good work you complete comes from the power of the Holy Spirit. The same power that raise Christ from death lives within you by the Holy Spirit. When you sin and go away from the teaching of scripture you have either suppressed or ignored the Holy Spirit's direction. God will never lead you into sin (James 1:13). As you are led by the Spirit, will lead you to become like Christ.