That's a great question, @Mirna Al Ali. Do you mean for your client? If so, it's important for them to realize when and how their behavior is driven by their egos. You can get them there by asking them questions to pinpoint what motivates and drives them, and running it down till they realize what feeds their egos - is it complexes, trauma, pride, etc. Having an understanding of what feeds their ego and whether or not it adds value is a good place to start transforming their behavior for the better. The key is self-honesty for self-awareness, and then self-leadership through emotional intelligence. Hope this helps.