What is it like to have a high IQ?

I don't got a very high IQ, mine is around 125. It's respectable, yet it's high. Some of my friends have very high IQ's, say around 135 or reaching 140. Yet, I'm teaching them special and general relativity, simply because I've got curiOSity and passion for science, in special; physics. I find myself always thinking about physics and mathematics, yet I'm not talented in it; I learn by doing it alot, alot, alot. So my experience is just; do what you like, it's probably what you do best. IQ is not important; there is a professor in psychology (don't know his name anymore), his IQ was determined to be around 90, which is quite low. Yet by studying hard; he made to be a highly regarded psychologist. Another example; Richard Feynman. He had an IQ of "only" 124, yet people see him as 1 of the most important physicist ever. IQ only measures how well you do a particular test, not how well you do in life ;)