I find that there are two kinds of fear. In one kind, things are quite delicate, or cirtical. At such times, I know what to do or not. First, I try to consult with my friends and reflect on it. Then I make a decision and act, and I never have any regret. Ultimately, this is very much related to motivation. If I have no negative, selfish motivation, deep down I will have no guilty feeling. A second kind of fear is based on imagination. To overcome that, you need calmness so that you can investigate it more closely. When you look into it in detail, your imaginary fear dissipates.