To be afraid is not terrible, it is terrible when you are not afraid. Do not worry about some unfortunate past experience, because it does not mean anything. When you try, there are two options, it will or will not work and it should be understood.
Also, do not be afraid of difficulties. They were and will always be these difficulties, but is it interesting when it's easy? It is worth loving them, because they show what kind of person really is.
Do not forget about faith in yourself. A man builds his own destiny, and everything begins with faith in his success.
I believe that if a person desires something, then he will necessarily achieve this, this is the law of the universe. And in order to understand how to stop giving up, it's enough to have just a drop of desire.