For some people they find hard saying sorry because they don't want to admit that they have done something wrong because of their pride and ego.But some people also couldn't say sorry but deep inside them they really feel sorry not because of their pride but for them their silence means that they are wrong or sometimes they remain silent because they know they are the one who's right. Before, I find saying sorry so hard because I don't want to lose the argument but as I mature I understood that saying sorry is one way of showing that you are old enough to accept that not all the time you are right and that other people need to adjust just for your sake.