Texting at parties.
I have a tendency to get lost in large group settings. They make me feel uncomfortable, awkward and strangely exposed. Sometimes I will cling to the walls of the room like a moth. Other times, I will disappear altogether. When there is no place to run or hide, I will become engrossed in my phone. It's a pacifier but a crude one. I prefer not to make a habit of it.
I, of course, am not the only one. You are likely guilty of carrying on conversations in large group settings with individuals who are not in the room. You should stomp out this nasty habit like a horse atop the hissing head of a rattlesnake. However, you should also consider it an indication that you crave one on one connection. Next time you feel the urge to text at a party or gathering, hone in on a single individual in the room. Carry on with them and them alone. You will be better for it. And, you won't piss off the host.