Fearless -- first, welcome to the forum as I see you're new.
Second, I can't help but notice the quotation you chose for your signature is, itself, a pretty "sabotaging" statement, in a sweeping-generalization kind of way. At least it seems so to me. Re-read it and tell me if it seems so to you. Does it seem that way to anyone else? Maybe it's just me ... *sigh*

I'm with Emily up there about there being nothing subtle about my negative self-talk. I was an early adopter of the technique around the age of 6 or 7 or thereabouts, primarily as an attempt to bond with the humans by showing them hey, I'm right there with you guys, I hate her too! I think she sucks too! Don't hold it against me that everywhere I go I have to drag her around! (I'm not kidding about this -- I am not a "repressor" and can remember my own thoughts and feelings from numerous times & places in my life quite clearly -- these were my exact thoughts at the time.)

Needless to say it didn't work. Which gave me other reasons -- new ones -- for sticking with the habit.