I recently read this article from over at The Kitchn about the one mistake beginners make in the kitchen and I am definitely guilty! They say that the best way to ruin meat or other things that are frying/grilling is to move them around too much. I'm generally an impatient person so it's hard for me not to check on whatever I'm cooking. Also there is something about "stirring" that makes it feel like things are moving along even if they aren't. I was very diligent last night when browning chicken breasts not to move them and they turned out great-- what a great tip!