The key to happiness in 2 simple formulas

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Across
  1. 1. sius
  2. 2. hbdjhd
  3. 5. kbkjd
  4. 6. ihiu
  5. 7. ksbs
Down
  1. 1. felicidad
  2. 3. preocuparse
  3. 4. ser
  4. 5. no