Arrogance feeds on pride so the best way to get rid of arrogance is to kill your pride by embracing humility. When pride is present, you see yourself higher and betrer than others which leads you to demonstrating arrogance. So the best thing to do, is to take away the source of pride in your life. You need to ask yourself what am i so proud of or bragging about anyway? If it is your wealth for example, i am not saying you should throw it all away but try to turn a blind eye on it and consider yourself to be like everyone else even if that is not the case.

Learn to value others more and yourself less and that can only stem up from humility. Humble yourself and step down from the high heights that you have placed yourslef in and comw down that ladder to see yourself at thesame level with others.

And for those who are arrogant, there is something you should know, something that should be at the back of your head:

The one thing you are arrogant because or about will not last forever, plus there are others that are higher than you, better at it or greater. So there is no need to be arrogant...

Hope this helps