2 Corinthians 4:3 But if our gospel be hid, it is hid to them that are lost.
If you are a Christian, then you are commissioned to carry the Gospel far and wide to everyone you know. It is called a light in Matthew. Light is an guide to them that are in the dark. When a boat is lost at sea, it is the light from the lighthouse that is their saving grace. When someone is lost in the woods, they look for a light from a house or building to find refuge. When a child is scared in the night, they turn on light to make the nightmares go away. Light is a sign of hope. There is a world of hurting people that is looking for a light, for a way that is better than the way they are living.
People looking for a light turn to drugs, alcohol, sex, money and everything else possible in this world. If we, as Christians, don't live a life that shines that light, people continue to turn to things other than Christ to make the darkness in their life go away.
When we hide the Christ has given us, it is not us who suffers. It is the lost hurting people of the world. We are commissioned to help the lost and wounded, the ones suffering in the darkness wandering around in circles. Imagine where you would be if someone did not shine their light for you to follow. You could be the one who turns to addiction of one kind or another to fill the emptiness in your life.
So shine your light and make the world a brighter place.