All right, I do not take psychology. I have no experience in that department, but J would like to shed some light on a theory I have of why it may seem hard for us to worry. Or, some of us.
Many have had the mindset if worry. Used to it, your brain reacts instantly to any body pain/ache/feeling. I think, or in my case, I use worry as a security blanket. Almost like OCD. I am so used to worrying, and since in the past when I worried nothing bad happened, so in order for nothing bad to happen now, I have to worry.
Does that make sense? I just notice this of myself. i notice I feel uncomfortable when I do not worry, like it is a habit; a ritual. I may be the only one who feels this way, and if so, I will call that my own theory of me. But it made me stop and think and I thought I would share it, because many of us worry, and it seems hard sometimes, for us not to.