What positive thinking can do for you

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Across
  1. 3. Something unlucky or bad that happens (noun, 10 letters)
  2. 5. How you think or feel about something (noun, 7 letters)
  3. 6. Feeling very sad for a long time (noun, 10 letters)
  4. 9. Looking for information to learn about something (noun, 8 letters)
  5. 10. Believing something good will happen (adj, 7 letters)
Down
  1. 1. Making something longer (verb, 8 letters)
  2. 2. Feeling happy and hopeful about what will happen (adj, 9 letters)
  3. 4. Good things in your life that make you happy (noun, 9 letters)
  4. 7. Doing something by accident that's wrong (adv, 10 letters)
  5. 8. Feeling thankful for something nice (adj, 8 letters)