Navigate to Bricks Create (see Related Articles).
Once you are in Bricks Create, open My Bricks to see a list of your Bricks.
Next to each Brick, you will see "unlisted" or blank space next to the title of the Brick.
A listed Brick will not have anything next to the title, while an unlisted Brick will have "unlisted" next to it. Bricks are set to "unlisted" by default. You can confirm a Brick is listed if it doesn't say "unlisted" next to it.