Isnt it a cop-out to blame hitting the wall on mental fatigue or a lack of motivation? Doesnt that just excuse a lack of proper training and preparation? If were being honest, isnt it just a matter of pushing through the pain and discomfort, rather than trying to find some mystical mental trick to overcome it? And whats with all the emphasis on positive self-talk and visualization - isnt that just a bunch of fluff that doesnt actually address the physical limitations that cause us to bonk in the first place? Can anyone seriously argue that mental toughness alone can overcome a lack of fitness or inadequate nutrition?