I think all of our emotional responses are essential, they guide our behaviour and are the basis of society. Overcoming a fear is great though.
Discussion
I agree with you. Moreover I try to differentiate between emotions and feelings. I don't always succeed.. :) Fear is an important primal instinct and still helps us to interpret dangers (far away from hunting mammoths, though .) You shouldn't let fear stop you from making courageous decisions .That's how K I understand this quote, that’s how resonates with me.
Sorry, typo :)