The summit within

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Across
  1. 1. state of feeling of close relationship
  2. 3. the ability to continue doing something painful or difficult for a long period of time without complaining
  3. 5. of value or importance
  4. 8. - similar to something
  5. 9. - the ability to keep doing something difficult, unpleasant or painful for a long time.
Down
  1. 2. - unsurmountable
  2. 4. - fatigue
  3. 6. very happy because of success
  4. 7. - view of a wide area