“So you must remain faithful to what you have been taught from the beginning. If you do, you will remain in fellowship with the Son and with the Father.” 1 John 2:24 NLT
Putting into practice those things you are taught through God's word is the heart of living the life of a disciple of Christ. Remaining faithful to those teachings has a direct correlation to remaining in fellowship the Son and the Father.
Jesus actually makes it more clear: “Jesus said to the people who believed in him, “You are truly my disciples if you remain faithful to my teachings.” John 8:31 NLT
Remaining faithful to His teachings is the very essence of being a disciple of Jesus.
Remain faithful to what you know...to how you are to live as a believer. The power to do so is within you as a child of God.