"People who operate by emotional reasoning basically believe that "If I feel it, it must be true." The essential point here is that this type of cognitive distortion states that "Feelings are facts and to hell with the truth.""
The ultimate point here is that feelings become fact for many reasons and emotional facts absolutely drive behavior.
So, when a person feels a compelling, powerful and familiar emotion, it immediately initiates a hypnotic regression to the past where some event initially caused them to experience and believe that same feeling as truth---even it wasn't true.
And feeling (hence believing) that one is flawed and unworthy is a universal recipe for successfully buying into and acting upon the self-sabotage myth.
What this all means is that believing in self-sabotage is a world famous recipe for feeling and experiencing the same hopeless, damaged feelings and results again and again and again.
And take this next point to heart please: It is said that even the most successful and happy people have critical, inner voices-- they just don't hear them very well.
With the preceding in mind, I invite you to explore the following simplified NLP technique with an open mind because your brains might fall out and then you can wash them clean of old beliefs. I urge you to use this method right now to start changing yours or your clients' inner self-communication/self-esteem recipe.
Devin's Brief NLP Process for Eliminating Self-Sabotage
(Please note this technique is merely an adaptation of existing NLP technology.)