we wake up with a premonition that things are going to go wrong that day. And fact is, they do.
I've realized that when this happens to me, if I keep telling myself -
what happens is for the best
and
what happens, happens because it should happen - it was meant to happen
then it becomes easier to cope.
Of course there is the initial period of getting upset and irritated, even angry, maybe. That's okay provided you stop after a bit. Staying on this path only makes it worse, because you would be sending your negativeness like a river to touch everything you do or think or feel. In fact, it will unravel your whole day. But, after letting off steam for a bit, preferably to yourself (or maybe to a really trusted person), it is better to focus on something else - something that is totally different. Could be stopping your mind from thinking at all, or, going to the garden or another room - a change of scene, or, going through your recipe book and getting all the ingredients together to cook your favorite dish, or, indulging in the very simple act of pottering around in the kitchen and making yourself some coffee.... This will soon take your mind off the very thing that has happened/not happened as you expected/were ready for. You'll find that your mind is calmer and you are more in charge of yourself.
Once this happens, keep repeating the two sentences mentioned earlier, and soon you will be able to handle the rest of the day with equanimity and good cheer....maybe even laugh at yourself.
And so, you've succeeded in not taking yourself too seriously (these things happen only to me...line of thought), and you're able to do what has to be done without allowing the blackness of your earlier mindset to color the rest of the day...