like a runaway

Is it worth my friends getting mad at me if I don't want to tell them my real problems?  I don't want to be the one who upsets people by thrusting my problems on other people even though they say they want to know what's wrong.  I don't think it's fair to them.  They don't know what they're getting themselves into.  And they have to care, wouldn't they?  I know they want to help, but they just can't.  No one can help and that's the worst thing about everything.  

I don't feel like talking.  I wonder what people would say or think if I just didn't say anything for a while.  Would anyone miss my voice?  Would anyone want to see my bubbly attitude come back?  How should I know unless I do it?  But I don't think I'd be able to do something like that.  I'm not the one to be a mental mute.  Whatever.  I feel uneasy a lot of the time.  My stomach churns for the tiniest reasons.  I don't get much of anything.