"It is not about going from good to very good -- it's about going from good to great. Anyone who settles for very good is destined to spend their golden years bathed in a sea of regret, wondering why."
-- Steve Siebold
Frustrations befall you when you think you are great but unable to achieve what you wanted. While you look at your neighbor who is less intelligible and wonder how he achieve what he wants.
Sometimes it is not intelligence that propel someone on top but the dedication they put to be on top plus an open mind to filter his thoughts and decisions.
Ego plays a great part of our behavior and should let go; if one wanted to be on top because your ability and management will not help you if people below you will not work for it.