There's an old saying: "Fear the God you don't see at least as much as you fear the people you do see." Even if you don't want to discuss your faith with others, at least give God the respect he has earned from us by confessing your belief if directly asked.
As for your faith, you need to ask yourself a very serious question: Do you believe that Jesus Christ came among us, and then offered himself as the perfect sacrifice of atonement for the sins of mankind, or do you believe in Jesus Christ's coming among us, and then offering himself as the perfect sacrifice of atonement for the sins of mankind? It is not our belief that Jesus accomplished these things which saves us. That is nothing more than an intellectual exercise. Instead, it is our believing in Jesus' having done these things which saves us. That involves our putting our trust in the ability of his sacrifice to cleanse us of our sins:
Now we know that whatever the law says, it says to those who are under the law, so that every mouth may be silenced and the whole world held accountable to God. Therefore no one will be declared righteous in his sight by observing the law; rather, through the law we become conscious of sin.
But now a righteousness from God, apart from law, has been made known, to which the Law and the Prophets testify. This righteousness from God comes through faith in Jesus Christ to all who believe. There is no difference, for all have sinned and fall short of the glory of God, and are justified freely by his grace through the redemption that came by Christ Jesus. God presented him as a sacrifice of atonement, through faith in his blood. He did this to demonstrate his justice, because in his forbearance he had left the sins committed beforehand unpunished - he did it to demonstrate his justice at the present time, so as to be just and the one who justifies those who have faith in Jesus. (Romans 3:19-26,NIV)
First he said, "Sacrifices and offerings, burnt offerings and sin offerings you did not desire, nor were you pleased with them" (although the law required them to be made). Then he said, "Here I am, I have come to do your will." He sets aside the first to establish the second. And by that will, we have been made holy through the sacrifice of the body of Jesus Christ once for all.
Day after day every priest stands and performs his religious duties; again and again he offers the same sacrifices, which can never take away sins. But when this priest had offered for all time one sacrifice for sins, he sat down at the right hand of God. Since that time he waits for his enemies to be made his footstool, because by one sacrifice he has made perfect forever those who are being made holy. (Hebrews 10:8-14,NIV)