I have approximately one million things (okay, I'm rounding up) to do before tomorrow morning.
Standing in the way of me accomplishing those things (necessary things like practicing Brahms, Schubert, Beethoven, Handel, Paganini, Sibelius, and Bach; necessary things like cleaning my whole house from top to bottom before in-laws arrive for the weekend) are:
String orchestra rehearsal (10:15-12:30)
Shostakovich class (1:00-3:45)
[Drive home. Hope for no traffic.]
Teach lessons (5:00-6:30)
Orchestra rehearsal (7:30-10:00)
So when I get home at 10:30 pm, I must accomplish everything in a whirlwind of productivity, then try to get a full night's sleep before tomorrow's 9:00-5:00 teaching marathon followed by an orchestra concert.