I will reward myself with a hot luxurious bath, video game sessions, walks outside in the country, buying something small for myself (usually pencils, pens, guitar picks, art-related things)...Or I will just say a good old affirmation to myself a few times (whether I believe it or not) "I did well today, I'm happy with myself." "I am growing and learning and that's pretty cool of me." "Today I did awesome!" Okay it sounds cheesy as hell but for all the negative self-talk in my head it makes a big difference.