I was a happy child.
I saw very social.
I had a very good outlook on life.
Hope this helps!
If you are telling us to revise the sentence, one error is that there is a double negative. 'not' and 'un' would cancel each other, and the revised sentence 'I wouldn't say he's the nicest guy around, but I've seen him behave kindly before.'
So you have to have courage to speak in front of an audience and tell people what you believe in but you also have to have courage to sit and listen to other peoples opinions about what they believe in even if you don't believe what they believe
What are the choices to fill the blank