I found this in one of my notebooks recently.

Basically, a level of anxiety is needed for us to perform at our best. Hence “Optimal Anxiety.”

Too much comfort will keep us stuck.

Too much anxiety -- ie abject terror -- will trigger our fight or flight response, which is not conducive to effectiveness and creativity.

Do you deliberately create situations of optimal anxiety for yourself?

I think I drew it after reading this article on Business Insider.