Uncomfortable?

Feeling uncomfortable is going to happen just like not knowing.

It's the gateway to learning. To master certain difficult situation, we have to push ourselves to that situation very often even though it's uncomfortable. That way we are prepared for those situation if it comes without notice.

On the other hand, if we stay away from the things that makes us uncomfortable and we have to deal with it all of a sudden, all sort of anxieties will hit us as we are caught off guard.