For me personally, my photographic efforts have suffered from stress, anxiety, and different distractions while out shooting in the field. Over the years, I've come to realize a few things, and I've developed some techniques that help to get my head in the game. What I'm essentially getting at are methods that calm my mind down and really develop and focus my creative energy on photographing the environment around me.
Hope this helps you too! Check it out: www.texbrick.com/photo/notes/photo_mindset.pdf