Yes Yes and Yes First you ll be more self dependent, you re reach a point not trusting anybody cause as a foreigner in some countries they see you a pocket of money so they try to exploit you, Second when you see people up close unlike what you expected or heard you change your view. Finally getting into new culture and standards or customs is cool when you pick up the good 

Yes absolutely

It must be the most challenging task of the world to convert individual state of mind. Living abroad has to be a useful avenue to modify perspective yet one has to invest a lot before they can live abroad no matter it is money, time or effort.   

For sure!

Living aborad is a learning experience that brings you to a whole new world

I have observed many expats living overseas are using their outmoded state of mind in thinking and making a living in another country even though they can speak fluent English. 

It is not easy to think differently. Living abroad is just one of the manners to drive you thinking differently and you still have works to be done even if you've lived abroad.