There is a fine line between caution and fear. Caution is knowing and understanding the risks associated with a particular situation. Fear is allowing yourself to be limited by them. Faith is not throwing caution to the wind, but rather proceeding in spite of caution because you have directions from a higher Authority to override it and keep moving. Without such directions, caution should always be heeded. This is not a lack of faith, but rather an abundance of wisdom.
Proverbs 14:16 – The wise are cautious and avoid danger; fools plunge ahead with reckless confidence