In the middle of a yawn, touch your tongue.. It'll stop your yawn

I really dislike when I get called sweet. No one knows me enough to say whether or not I am a sweet person. I may seem sweet, but let's face it, deep down inside, I'm not. I'm a twenty year old girl who has been burned too many times to trust the world. I do not hug people by choice and I freeze up when I have to. I do not like to be looked at, not even by myself. I do things to ruin my relationships with people, because I don't like to be close to others. I cry every night in my bed, because all I want to do is harm myself. I laugh when people fall. Do you need any other reason as to why I am not sweet? Or is that enough? Because I could go on and on about how horrible I am. If only you knew..