Tangled up

Some days my fingers just don't work. I wonder if it is better to keep on practicing even though it sounds awful and sloppy or if on days like that you should just stop before you make things worse! Today I decided to stop; I guess it just isn't a Schubert day. I did manage to practice some other pieces before my fingers became too stubborn. Maybe a bad practice today will mean a good lesson tomorrow (because good practices sometimes have resulted in terrible playing at my lessons!).