verbal diarrhea

I'm a self proclaimed spit fire. I don't know when or HOW to shut up. The good news is you never have to wonder what I'm saying behind your back because 9 times out of 10 I'll say what's on my mind to your face. The bad news is....1) people don't like either...most people don't like to hear that others are talking about them behind their back but they also don't want to hear it said to their face.....& 2) my case of "spit fire" may be more appropriately called "verbal diarrhea"...I just can't seem to stop it from spewing out once I get started....so I know this is a problem...& I'm trying to improve this problem.... I found and bought the perfect shirt and just got it in the mail over the weekend. It says "Lord, keep your arm around my shoulder and your hand over my mouth"....I can't wait to wear it!