D&C 115:5 - Verily I say unto you all: Arise and shine forth, that thy light may be a standard for the nations;
What a brilliant idea and theme for all - not just the youth... because others WILL notice your example... good or bad. If you hold high standards and never sway in them, people will see the light of Christ shining in your countenance.
And they will want that light.
So don't be afraid to share the gospel with a friend. I promise that it will bless your life and also the life of that person. You can be an instrument in the Lord's hands.
Oh yeah, and don't forget about General Conference next weekend! Help spread the word with the following video: