I like to think about a quote from a StarWars movie, ” fear clouds the judgement.”
From that we can understand that fear does not serve as the best energy to use as our source for motion. Using an energy that works from a place of love and gratitude is a higher energy vibration/frequency and better serves yourself and everyone around you.
“Having a gratitude attitude even when its hard is what people call brave.” – williamyorker
Check this video out for some awesome perspective.