For many people, fear is a stumbling block just because they do not have a clearly defined goal. If you know what you want and why you came to the cryptocurrency market, then first you will learn all the nuances. First, a detailed study of the material, then practice.
You are right. The mistakes several of us have made in the past are as a result of the fear of the unknown. The reason this happens most times is that, we do not understand what we are doing. If we to, that would have given us more courage.