Fast turnaround

How can someone's mood turn around so fast? Just under a week ago I woke up feeling great, and today I feel completely opposite.  Can it be that we have booked tickets to go home to my hometown during the summer holidays and I am already thinking about the problems we might face?

The unhappiness and things not said outloud.? I am feeling really down the dumps today/.so I just wanted this off my chest. I am going to put on some music and sing out load..usually helps me feel better.

But, it is still weird what a turnaround my mood has had since only yesterday.  Things will have to change here at home too. So I DO have many things to do over the next 3hours. Wish me luck!!