Happy - and afraid

What was going on today?
Well, guess!
According to probability theory today must have been something positive.
Guessed correctly!
Got good grades in some school exams.
Then in the break...
... strange.
When I appeared... I dare not to say it, to write it:
they were happy...
"oh, here he is...!"

I am afraid of tomorrow.
Of a destruction of that little illusion.
The whole life obviously consists of fluctuations.
Back and forth, up and down.
I am afraid.