Stress

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The more you don't want to do something or be somewhere, the more stressed out you become. Stress is caused when your mind is in one place (as an example fishing) and your body is in another (as an example work). To de-stress yourself, take your body to where your mind is or bring your mind back to where your body is.
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Letting Go

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When you notice that your shoulders are tight and your stomach is clinched, 
that's a sign you're holding onto fear and keeping your good at a distance from
yourself. The solution: pause, breathe and think 'feel good' thoughts again.

Frustration

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Frustration is nature's way of telling you to go play.