To me, being bias and having your own opinion is the same thing. Since opinions are not necessarily based on facts and knowledge and being bias means your in favor or against one person or one thing. I think when you make a statement or comment, your opinions will be biased, it is an automatic response.When we are in a good mood, our opinions are more likely to be biased because when we are happy, our opinions tend to be more optimistic and positive.
Everyone comes from a different background and experienced different things so i assume that every opinion is biased and it is the level of bias that determines the situation. When we are asked to write an essay or report, bias takes place unintentionally, and most of us don’t realize we do have baises.