Without a doubt, the hardest thing to do when fishing is to maintain the "pop - pop - rest" rhythm you are using when at the edge of your peripheral vision you see a wake making steady progress towards your little red and white popper. Holding your breath does not help any more than repeating your mentor's mantra (don't set the hook - don't set the hook). I am almost 67 years old and have been fishing since I was 6 and fly-fishing since the 80s and I still have the hardest and best time when a little one pound bank runner bass explodes on a popper in the still of the morning. Experiences like this mornings make fishing and life worthwhile.