This is one of my favorite thoughts of all time; the fact that as we follow Christ and seek to be more like Him, we'll be able to be examples to others' thus becoming 'lights in the world'. What a glorious thought that is.
One of my favorite recent scriptures to which I've given much thought is this:
"Every good gift and every perfect gift is from above, and cometh down from the Father of lights, with whom is no variableness, neither shadow of turning." James 1:17.
What does 'Father of Lights' really mean, I wondered? Here's what I found:
D&C 67:9 "For ye know that there is no unrighteousness in them, and that which is righteous cometh down from above, from the Father of lights."
"Of this expression, also found in James 1:17, Elder Bruce R. McConkie wrote: “‘God is light, and in him is no darkness at all.’ (1 John 1:5.) That is, he is the embodiment, author, and source of light, or in other words the Father of Lights. (Jas. 1:17.)” (Mormon Doctrine, p. 278.) Institute Manual
Let us seek to do what he'd have us do and live as he'd have us live. In this there is great peace now and great promises for the world to come!