It is good to prove our own strength and ability to ourselves, and let it build our confidence. Comparing ourselves to others and trying to prove we are superior is not the same thing, and is not required to build confidence. It can have the effect of becoming a negative habit, where we become satisfied with ourselves as long as we can find someone to dominate. Eventually we stop looking for our own growth and seek out flaws in others, or even create them if we can't find any.
