to be vexed

• 烦恼的心情

  a unsettled, irritated state of mind

• 烦恼的事

  vexing matter

• 添烦恼

  be vexing

• 真叫人烦恼

  so annoying

• 自寻烦恼

  get oneself worked up

• 不必为区区小事而烦恼。

  There's no need to worry about such trivial things.