Yes I know that we believe we have so much knowledge about several things in life , but the truth remains that we cannot know it all..
We should learn how to listen to opinions on different subjects most especially those that we might not be aware of .
Listening to opinions can also make you to increase your knowledge towards certain subjects which you might be ignorant of or not well informed about....
Learn to be accommodating, I am not saying that you should just accept all opinions that comes your way , but what I am saying is that you should be willing to listen to opinions and at least see if you can pick one or two lessons from them..
You can learn from others and others can learn from you too , life is about give and take..Give knowledge to others and receive knowledge from others..