It may be because you have to be around them all the time- sometimes family members will just not get on because personalities can clash, especially if you are always in the same environment together. Get out of the house more, or engage yourself in hobbies if it is people in your household who annoy you and then try and spend quality time with them when you do see each other. Make an effort to get to know your family on a more personal level and their views on things and you may realise they are actually ok. Some of their views will differ from yours, but that is normal and a fact of life, just try and find your similarities too and you will have some common ground you can relate to them on.
Try and realise that the people you are meant to care about probably do care about you. They will want what is best for you, so maybe try and enforce their opinion on things you 'should' do or things you should be like on you- thus annoying you. Just try and realise they only do it because they care and have a heart to heart talk with them so they realise they should try and tone down their behaviour as it sometimes comes across the wrong way to you.
omg, a teen who hates her family. stop the presses. we actually have a new phenomenon. get over yourself, all teens hate their families. unless they're abusing you (you know, beating you till you bleed, strangling you, biting you, not feeding you, molesting you, etc) deal with it. when you're an adult you can leave. of course by then you'll have learned to appreciate them. unless they're abusive. in that case, call the cops.
The people that are possible to annoy us are those who are close or around us. It is quite impossible for people in the street to annoy us. At the same time, people who are close to or around us are those who will be there when we need help. :-)
Murphy's Law! That happens to most of us...we just learn to deal with it or move on!