It's easy to quit drinking. I do it every Monday. =P Keep it up you're doing great! Try to replace the old habit with a better one. Maybe try something else like explore drinking different kinds of tea. It can be fun and it'll give you an excuse to go into chinatown.
You're funny! And yes, I've been substituting with iced tea, and it's my favorite! I love the vanilla spice tea I got with a splash of milk.