Having a bad day is terrible. I know how it feels because sometimes when I am making great plans to my future I suddenly have a bad day and I start to wonder if I will succeed or fail.
A bad day can turn you down like nothing else can. Everything goes wrong. First you slip when you get up and you hurt your knee. Then you don't have shampoo to wash your head. Then you don't have cereals and this is just the beginning.
How to live such day? First get ready for the worst ALL the time. You never know when you will have to experience the worst in your life and sometimes it comes in the best situation. Get ready for it all the times.
Don't bother. Today will be soon gone and long gone. Tomorrow will be a brand new day full of opportunities and I am sure you will feel so much better.
Have always a plan B. If things go wrong like they frequently do you have always a backup plan.
Don't worry and don't stress, it's bad for your heart and you have no idea how! Never get mad at something!
The things worth your tears never make you cry!!
The same is true for people!