You can reward yourself.
It need not be with alcohol.
Cook yourself a tasty meal...go out for dinner...eat your favorite junk food...go see a movie...buy yourself an article of clothing...spend the day outdoors...hang out with people you love...even clean something. Anything. That day is your day...just don't drink. There are many alternatives.
Hang in there...we all know how tough this is. Being sober means changing one's mentality and life style. Stay strong.