Bro you need to drink more water. Not drinking enough can cause kidney stones and other stuff. Staying hydrated is soooo important. Every cell in our bodies uses water. Up your intake man!! I drink almost a gallon a day I'd say. Even more if it's hot out.
Milk is not really good for you... it's full of puss and overall unhealthy. Having that said, I don't know if i drink 'enough' but i certainly do drink. Sometimes more than other times, and weekend nights more alc than other nights... :p hehe so I'd like to think yes i do haha with an exception every now and then.
Maybe you can set alarms on your phone for every 2-3 hours to remind you to go drink some water.
I usually drink water, tea, the most and then whatever else there is every now and then, for example cola or juice. I'm not a fan of juices unless it's fresh made, so not from the carton or sugar filled ones... :)
I'm like you, I definitely don't and I've had kidney stones so it's important I do and I still don't lol. It's hard I find when I'm not thirsty. And if I do drink, it's something I shouldn't be drinking like coffee.