Hi @cahlen,

As always each one need to find his own balance on this topic.

Because as you stated, fear is needed to warn you, to make you react to a threat. (given you aware enough to recognize the threat).

But if you see everything around you as a threat, fear will paralyze you and you will end up doing nothing. (I think it is what people try to tell when they say don't live in fear, fear is the mind killer etc…)

On the two opposite side of the fear spectrum you don't act.
One because you are careless, the second because your stuck.