I'm such a creature of habit and I have my routines, I'm not sure if it's because I like structure or if it's the mild OCD.  Or a combination of both.

I drink two coffees in the morning with my oatmeal.  Always a creature of habit in this respect.  Then I move along to drinking water for the balance of the work day and ensure that I drink no less than 2 litres. 

I get grouchy if I can't get to the gym or practice some yoga.  I guess that's not a bad thing being disappointed you didn't make it or have time for the the gym, it shows just how much I enjoy it.

When I get home at night, I drink 1-2 coffees, which probably is really what keeps me going and not passing out by 7 pm. 

I'm such a creature of habit it's sickening.