Don't worry - an anxiety wheel of misfortunate

This wheel of worry, violently copied from the last Brain pickings newsletter, explains how one individual organized his circadian states of anxiety. I find the wheel type of presenting the focus of anxiety during the day as a powerful instrument to reflect upon how we live our emotional states. 

There also a nice quote:

We should make ourselves stop trying to explain our own difficulties. Our first impulse is to try to account for them, figure out why what has happened. Sometimes such an effort is beneficial: more often it is distinctly harmful. It leads to introspection, self-pity, and vain regret; and almost invariably it creates within us a dangerous mood of confusion and despair. Many of life’s hard situations cannot be explained. They can only be endured, mastered, and gradually forgotten. Once we learn this truth, once we resolve to use all our energies managing life rather than trying to explain life, we take the first and most obvious step toward significant accomplishment.

My questions are:

• although it makes sense that we probably can't explain everything, we are lead to think that we should. Is that positive? Does it have to be explained as being positive or negative? Probably just a sign that we need to make sense of ourselves. 
• do we have to start to reason before we understand why a specific emotional state dominates us? What is anxiety and what are the emotions that characterize the way we position ourselves toward the Others, the World?
• Is this quote based on the assertion that thoughts are our experiences? There's no cognitive mark when experiencing events that have a significant impact; there's a bodily experience that modifies our emotional state, which we will use to create meaning of a specific event but also about ourselves, the fabric of our being.