>What else can't you learn.
In a time sensitive manner, people skills, learning people skills is one of the hardest things to learn.
In a time sensitive manner, people skills, learning people skills is one of the hardest things to learn.
I wouldn't use the word most, more like many.
But regardless, you make it sound like there is something wrong with such people for feeling insecure when in fact people exhibit insecurity in a wide variety of contexts (job interviews, heights, closed spaces, etc).