Things that irritate me

Yesterday, I realized that there is a pattern in some situations that irritates me. Usually, these situations are triggered by someone who is persistent or stubborn in his own way that it affects the mood of those around him. I'm usually a reasonable person, or at least I'd like to think I am. But when I'm with someone who keeps annoying me in the same manner over and over again, even I feel frustrated and annoyed. Usually, I'd like to tell the person to get off my back, but there are situations or people that I can't just directly say that. I know that I'm being a coward if I can't be honest about my feelings with other people but sometimes i can't say things like that directly. It's either because I don't want to hurt their feeling or because it's considered as very rude if I do that.

Most of the times, when I tell a person to stop doing whatever that is irritating me, he or she usually stops. But the problem is that some people just have to have their way about things even if it annoys other people. It really is frustrating to deal with someone like that. You can't reason with them (or maybe my reasons are not good enough for them) and it seems like the only way to solve it is to raise your voice and show them that you are really irritated by them. But what would that do? It would only cause conflicts and ill feelings towards one another. Well... I guess sometimes you just have to confront them (as respectfully as possible) one way or the other. I just wish that people have some kind of common sense to leave each other alone when the other person is irritated.

It's not too much to ask, is it?