For some reason it took a stupidly long time for me to realize that anything that isn't permanently sustainable isn't something I'm going to do. I always thought I would diet "until" (also that i'd start tomorrow. lol). I used to think I would lose the weight and then go back to normal life.
The change in mindset came when I finally realized that starting healthier, permanent habits was more important than losing weight. Realizing losing weight is a side effect of being healthier has let me be more consistent with my efforts, because being healthier isn't a goal that you can fail at if you're trying.
There is no reason we should reserve treating ourselves nicely for when we reach goal. Reaching your goal, despite being immensely satisfying, is no more impressive than working towards it. Every step is equally important and should be celebrated.
I'm glad to hear you had a positive day today, and hope tomorrow is more of the same for you!