My IQ is more than three standard deviations above normal. In Meyers-Briggs I'm right down the middle between E and I.
Certainly I was never very popular in school, and for a long time there was a feedback loop between peers finding me arrogant and annoying and me becoming even more arrogant and annoying in defense.
But then my family adopted 4 special-needs kids, and I learned that being smart wasn't enough for dealing with everything in life, and also that I wasn't half bad at some of the other stuff: I made a perhaps-surprisingly good big brother. And then I went into the IB program for high school and for the first time personally knew people who were definitely smarter than me (if only in some fields, I told myself). Both experiences were very helpful in teaching me to have an identity outside intelligence.
But as far as relating to people in general, it's not as bad as you might expect. For one thing, almost everyone I know is smart. My parents, my near-age biological brother, my wife, my kids (so I tell myself, but they're too young to know yet really), and most of my friends are all of well above average intelligence.
And overall I find that humility and real (or adequately feigned) interest make interacting with almost anyone pretty workable. For humility, I try to remember that I'm smart through no merit of my own: it's a gift of God (or chance, or the inexorable unfolding of the big bang as you like) through genetics and environment. Of course I participated usefully in my own intellectual growth, but there are any number of sad failures of application and tenacity to count against me in that column, too. For interest, like so many things, it's about faking it till it becomes real.