Steve Taylor was one of my favorite Christian musicians when I was a teenager. In 1994 Taylor was interviewed for CCM (Contemporary Christian Music magazine). One of Taylor's statements really challenged and inspired me: "I have a philosophy of living life in the open."
Taylor wanted his life to be transparent. The Bible supports this idea of living the Christian life in the open.
“You are the light of the world. A city set on a hill cannot be hidden. Nor do people light a lamp and put it under a basket, but on a stand, and it gives light to all in the house. In the same way, let your light shine before others, so that they may see your good works and give glory to your Father who is in heaven. - Matthew 5:14-16 ESV
The Bible also supports secret or private religious devotion.
But when you give to the needy, do not let your left hand know what your right hand is doing, so that your giving may be in secret. And your Father who sees in secret will reward you. "And when you pray, do not be like the hypocrites, for they love to pray standing in the synagogues and on the street corners to be seen by men. I tell you the truth, they have received their reward in full. But when you pray, go into your room and shut the door and pray to your Father who is in secret. And your Father who sees in secret will reward you. - Matthew 6:3-6
So the Bible supports the idea that Christians should live openly for Christ by sharing the gospel, helping the poor and loving one another. However, God does not want us doing religious things in the public for worldly praise. God wants the world to see Him through our actions.
I have struggled with "living life in the open" and sometimes my faith has been very private. During some of these too private moments, I should remember the song This Little Light of Mine.
This little light of mine,
I'm gonna let it shine.