If you're pretty smart you can often find the pace of life in certain situations extremely boring, and boredom can be very painful.
If you're the smartest kid in your class you can be bored into submission if there isn't much driving you.
Same thing with employment. If you're smarter than all your superiors you still may have to harness your ego while you rise.
Someone with high intelligence also needs to learn that it isn't everything and they need to be patient, persistent, high eq, etc.
bureaucracy, hierarchies, too much structure, other personal qualities lacking (as mentioned, patience, eq, etc)... all of these things can hold someone back.
Just a few examples from what I've seen/done.
ego/pride may be the most problematic.
Last edited by Jim11; 10-13-2007 at 12:47 AM.