If so, or if not, how do I overcome this feeling of fear and lack of motivation?
wanting to do it is motivation. if you didn't have motivation then you wouldn't want to do it, and you wouldn't be here asking this. but i think what you are experiencing is like what home-owners experience when they feel like their neighbors lawn is always a brigher shade of green than their own. it's not really true, but it's a common feeling to have. i don't know of a direct solution for this, but simply knowing about this phenomenon is helpful. i'm sure there are things that other people see in you that they wish they had