Ps. 40:3 - "he hath put a new song in my mouth, even praise unto our God: many shall see it, & fear, & shall trust in the LORD." - Praise isn't something that causes fear & trust in God is it? Yes praising God in "public" will cause this to happen. Praise God for His greatness, love, strength.etc. People will notice. Don't be a closet "praiser" instead BOLDLY praise God even in the dark times, and you be a light.