I just try to quiet those [negative] thoughts when I have them - ‘Gee this hurts,’ or ‘Gee this isn’t much fun,’ or ‘I have a blister on my foot,’ or ‘This wind is really driving me nuts,’ I try to recognize that I’m having a negative thought and I actually say the word ‘Stop.’ I change my focus to something else like counting my pedal strokes and before you know it you’re focused.