How to be a useful human?

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Across
  1. 3. You aren't afraid of trying new things.
  2. 5. You care for your life and your environment.
  3. 6. If you say what you think.
  4. 8. If you have something what you don't need, you give it to others.
  5. 9. When you are nice to others.
Down
  1. 1. You take care of others.
  2. 2. You are searching for new contacts, if it is possible.
  3. 4. If you begin something you always finish it.
  4. 7. You say jokes, but your behaviour is also making peoples laugh.