Have you done something for 10,000 hours and are STILL terrible at it?

Breathing.  I could have mastered the art of that by now, but I am too lazy.  I just breathe shallowly in and out in and out in and out instead of practicing to be a breathing master. 

General housekeeping.

Yes, this curious thing called "life"...;-D...

473,040 hours.  Life.

Living

No one believes me, but I really do try to ignore poor grammar, I truly and actually make a valid attempt. I'm lousy at it, by the way.

~

Pretty much anything involving algebra. :-)