Keep out, trouble.

My grandfather's hospitalised in the MICU ward.
I'm terribly worried about his condition.
I had insufficient sleep last night.
My wisdom tooth had been hurting, and especially painful today.
It's Monday and I have to climb out of bed early to go to work.
I paid double for my cab fare because of a freaking jam.
I have car sick from the jerky taxi ride stuck in the jam.

These reasons are enough to keep me in a horrible mood for the entire day. I don't need more.