Doesn’t everyone think challenging something new is a threat? At least in my case, it is stressful. If I want to challenge something, I have to change what I am used to. And every shift brings about pain. I have to break my routine, and it does not feel so good. I think it may be caused by my traits, introvert and perfectionism. I have not been exposed to unfamiliar situations often, and I tend to try to find a way to control them around me.