When "Treat Yo' Self" Goes Wrong

I've been thinking a lot about my detrimental reward system lately. I find my problem to be two-fold: the rewards I give myself are almost always food or alcohol, which both cost money and don't do anything for this waistline that I'd like to retract, and if I'm honest with myself, I'm rewarding myself for really basic stuff. I shouldn't get a cookie (literally or figuratively) for changing a really dirty diaper, steam cleaning the floor, or actually completing laundry from start to finish in one day. Those are things I should just do, because I'm an adult. 
I read a post earlier this week - 23 Ways to Treat Yo' Self Without Buying or Eating Anything - and it really hit home for me. It acknowledges the need to treat yourself from time to time, but offers great alternatives to confections and wine.
I've also downloaded a counter app on my phone. I'd like to keep a count of my good decisions - going to the gym, choosing the healthier food option, saying no to the offer of sweets, not spending time on social media when I have other work to do - and allow myself one treat after a long series of good decisions.
At some point I started using anything as an excuse to eat badly or buy something I didn't need. I'd like to change my thinking from needing to give myself rewards to celebrating legitimate accomplishments. Completing a grant application warrants a cupcake, making it home in the rain? not so much. 
How do you reward yourself without going overboard? Do you have a set system in place?