Nicely written, @makhzar. Fear exist, is a natural instinct of human. During ancient time when human still hunt to live, fear plays an important role for their survival. Imagine there are two tribes, one with the sense of fear while the other without. When they hear wolf howling, those fear will leave to a safer place while the fearless will mostly stay. Meaning, if the wolves really come to attack, those fearless tribe will perish.
However, in this modern era, fear has lose its significant role, unless facing extreme and life threatening situation. Being in this era is safer than ever compared to the ancient time.
By knowing this story, we know that fear is just a thread of DNA that pass down from our ancestors and has yet to adapt and evolve according to this new era. So fear not! Go forward, and just do it :)