I heard this from Kryon resently. I like it a lot!
All you need to do is light your match. All you need to do is be your light. You don't have to talk to anyone or preach to anyone. Just be and let your light shine quietly.
If you are in a room full of people, and the room is dark, just a single match will bring light. It does not matter where the light comes from. Some might try to find the source of the light and in turn also light a match. Other won't care other than be happy for the light.
Just be yourself, be gounded, be in your world, and light your match. Don't worry about the others. You are still making a difference.