Try it again and see what happens. Also, you might wanna try it alone. A LOT of people (myself included) find smoking alone much more relaxing, less stressful, more blissful. And if you break down into some kind of emotional shit, there will be noone there to make you feel ashamed or embarrassed in any way.
Tinfoil Bad. Glass Good. Metal/Ceramic Ok.
And as Ghost Said, if the problems persist, it may very well be from a deeply rooted problem. You could be bipolar, or severely insecure, or any number of psychosis's. Weed tends to bring forth things like this.