This is a fascinating article because it reminds me so much of bouts I went through with stuttering. Duda basically had lost his confidence because the bad so heavily outweighed the good. He may have so many good matches but one mistake, one bad match, and the damage was done. It was so difficult for him that he refused invitations and had a crisis of confidence. This is exactly what I had to get over with my stutter during my college to work years. I'd have moments and days where everything was fine and one difficult situation and it felt like I couldn't let it go. All of a sudden it would stay with me to the next morning, the next day, and that fear kept that tightness in my throat where everything was in doubt and it was like it's own self fulfilling prophecy until one day I'd be over it and have the good times until something reminded me I could block again or I had moments of doubt (even asking to repeat something I just said absolutely fine was enough to trigger it). One day I decided no more, I will not dwell on the bad. What is the point? It serves no purpose but to prematurely get in our own heads and cause it's own vicious cycle remembering our stutter to such an extent that it's like we call it on command from just the thought of it. If there was a bad bout, I wouldn't dwell on it any further because I knew this isn't always and I can get more comfortable with time. The more easily I moved on from it, the more easily and happily everyone else did. I realized no one really cared. Everyone is always worried about themselves, no one is actually thinking of us the way we do. And the great truth I learned about my stutter was the more I cared and worried, the harder it got, the less I cared and worried, the easier it got. It seems to be the human condition that the negative always outweighs the positive even if there is so much more positive. We can flip this on it's head. We don't need to be consumed by the negative. The strongest mindset we can develop is understanding this phenomenon for what it is, a bias that doesn't make sense and more importantly, doesn't help. It just serves to hinder us and drive us mad. It held Duda back just when he was on top and showed the truth of the saying "the only thing to fear is fear itself." I propose a challenge. Try it for a week, a month, as long as you'd like. No matter what happens, don't dwell on your stutter, what ever happens happens, do not dwell on it. What ever the reason you are there, what ever you are talking about, you can think of the subject, how the day is, anything, but do not dwell on your stutter. Even if you have a nice long stutter bout, you've made it this far in life, all I challenge you to do is not dwell on it for a time. Maybe start working out :-)