Many times we hear NO from our elders, NO from our bosses. And believe me it is the most irritating thing for anyone to hear so because it makes us bounded. Many have already compromised from this situation, however many(including me) are still struggling with it.
But its very important to hear and say the word NO on what is wrong. May be the one who is saying NO is your well wisher. And the situation in which you are saying NO would be later on good for you.
Remember :- At the beginning, you will be insulted. Later you will be ignored. But at end, you will be respected.
Compromising with your ego is very important because it is the only reason you are feeling bad and insulted on hearing or saying NO.