What should I do if I feel I have no guts at all?

I think this is a matter of personal mentality. For example, if you are going to give a speech, when you stand on the podium, you can imagine that there are people you don't know standing under the podium, and then there are some cabbages and some radishes, and then your mind will relax a lot. Then you express what you choose to express. Speak as loudly as possible, look ahead, don't look left and right, so that you can concentrate.