Understatement

I might admit there have been better days
When less of me was sinking in despair,
I have spent fewer hours in a haze
Of blank confusion; I have been aware
Of more of my surroundings, I have seen
Better results derived from better work.
Where now I'm dirty I have once been clean,
I have done duties I now choose to shirk.
There have been times I smiled happily
At sights that now elicit but a groan
And people that I now refuse to see
On other days I would not leave alone.
Yet all that said, although the day was rough
Because you're here I call it good enough.