discouraged

Today practice was discouraging.  I keep tackling stuff that's too hard for me, maybe?  I should spend more time playing stuff that I can play and getting my muscles strong, maybe.  I am having a hard time with this one phrase of my new solo where I'm supposed to slur something that seem impossible to slur.  This is where a teacher might be helpful.  But Ming found a metronome, and I played my solo with it, too slow, and that was good.