Identify three unique things about your restaurant.
Your three uniques are what sets you apart from the competition.
When you look at the competition in your trading area, a few restaurants may share one of your uniques. There may be a couple that share two of your uniques. However, there is no other competition in your trading area that have all three of your uniques.
Your trading area could be 5 blocks, 5 miles or for a destination restaurant, it could be the entire city.
The important part is you need to concentrate on marketing these items to help your restaurant stand out in a crowd.