Frustrating is the numbers on the clock.
Frustrating is the fact I haven't fallen asleep yet.
Frustrating is the 409 that popped up on the meter.
Frustrating is that fact that the corrections aren't working.
And what is also frustrating is that at the same time, I have crying in stereo. One is teething. One has night terrors.
Frustrating is being outnumbered by children that need you in the hours that you should be sleeping.