I have generalized anxiety disorder and it is a miserable condition to have, although I must say that I am a little better now in my mid 50s than when I was a college student.

For some it is brain chemistry, for others it is an unstable and unpredictable childhood, so the child does not know what will happen next, so they walk on eggshells as we say here.

Some people are just naturally high strung and worry, get nervous and fearful.

Lots of reasons.

I take medication to keep it in check.

Hi! when you stay positive and appreciate the things that  are in your life , the anxiety feeling starts to disappear!

I think that the moment you can admit you suffer from anxiety is a little personal success. First step to live with it. You can accept it for what it is and even try to use anxiety as your ally. It's not easy life though. 

hi hossein!

i think you wanna say with your support. i think being anxious is natural. as all of us have a fear towards something