Nope, Benzodiazepines do not work in this fashion. It is only through a more prolonged exposure that one would experience anything like sedative/hypnotic-dependence, withdrawal or, at worst, Delirium Tremens. You have nothing to worry about other than you're clearly irresponsible usage of Benzodiazepines. Buddy, I've been at this for a long time. I'm sure we both have stories and have different talents, but 8mg Alprazolam (Xanax) at a time is never going to be a "positive" life choice or direction.
At best you're in a stupor, useless for a day or two, at worst... literally anything. It's not a joke. When you are blacked out, you can do anything and anything can be done to you and a large majority of us have utterly different personalities when intoxicated.