The expression means being afraid to do something you had decided to do.

VOA: special.2009.12.13

They are afraid to do whatever comes to their mind,

他们害怕任何想法，

关于罗马尼亚 - SpeakingMax英语口语达人

what you have to do is just you have to forget that you're afraid.

你所要做的就是忘记自己的害怕。

生存英语 - SpeakingMax英语口语达人

They say a majority of people are afraid of being thrown out of their homes because rents are rising and they do not have the money to keep pace with this.

VOA: standard.2009.09.20