I kind of have this around people I feel unsure of myself around. Some bosses at work I feel this way about. Also, a couple of co-workers who are buddies with a couple of people who I know hate me. For that reason, I usually avoid them.
People usually have to talk to me first or I won't talk to them. At work again for example, I have co-workers whom I've really never talked to and I've worked with them for at least a couple years. The department I work in is pretty large, so it's impossible to really get know everyone but I cannot think of a single thing to say around certain people.
My interests and how I see life is so different than most, that I have nothing in common with a lot of people.
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If you don't say anything, you won't be called on to repeat it.
― Calvin Coolidge