Enjoying an afternoon cup of coffee

I am enjoying an afternoon up of coffee.  Normally I am strictly a morning coffee person, but I purposely don't drink coffee on days when I have to work.  And this week, I am working every day.  I don't mind skipping coffee here and there, but today I am feeling absolutely lousy, and I am fairly certain that one cup of coffee at this time of day isn't going to keep me up six hours from now when I want to be sleeping.  It is also helping to calm the irritation I am experiencing about my volunteer "job" with band that should not be so ridiculously consuming at this point.  There are some people seriously in need of the reminder "failure to prepare on your part does not constitute an emergency on my part".  I am pleased with myself that I have allowed myself to say no...but it sure doesn't stop them from asking for more!  Ugh!