My best friend tells me that I am silly to be upset about this.

我最好的朋友说我为此事心烦太傻了。

He seems to be upset about it.

他似乎为此充满忧虑。

I think you must be upset about this.

我看你一定对这事情很不爽了。

You could not be upset about anything on a day like that.

在这么一个日子里，什么事情也不会使你烦恼的。

That said, it is not unreasonable to be upset about going bald.

不过，这不是没有道理的是担心会秃头。