Drinking more water.

Similar to a friend figuring out water this is how I get myself to drink more water.

1. A while back, I bought several 500 ml bottles from Daiso for about ￥ 100. At the beginning of the day I fill each of them up and put them in the fridge.
2. Keep one at my desk. If I have a bottle next to me, I will reflexively drink sips while working.
3. Any time I empty a bottle, I scan an nfc tag on my desk to record it, and then get a new bottle from the fridge.

As a bonus, this also means short forced breaks throughout the day to empty water.