QUOTE(SueHM @ Dec 3 2010, 01:37 PM)

It sounds as though you have fallen into a bit of a pattern of quarrelling with the family over your practice time. I would suggest that you get together with them and have a calm discussion and negotiate some time on the piano, undisturbed by the others. You may find that they are happy to let you practice in the mornings after all, or you can agree on some times when they don't need to be in the room and you can have the place to yourself.
It is difficult when the piano is in a shared family space, and other people want to use the room while you are practising. The only way forward is to try to come to an agreement about who uses the room and when. You can't really expect them to respond or understand if you haven't explained how distracting other noises can be. Try to stay cool while you talk to them about it. Explain why you need to be alone, and ask for their support for your work.
Good luck

Is there any time when you can use the room without anyone else being there even if it puts you out. What about whilst your Mum is preparing the meals? there has to be some give and take if you want things to work. Alternatively ask for the digital piano or a keyboard for Christmas. Even if your parents aren't in a posiiton to buy one for you, they might get the idea you are serious, if you explain why you want one.
Could you practice at school? My daughter isn't allowed to use the practice rooms at lunch but her friend at a neighbouring school is.
We have two rooms in our house and the piano is in the front, we live in the back. The front lounge is very cold even in summer. Generally all the woodwind instruments make their way into the back lounge for practice. at various times of the day. we just get on with it. It's never really caused an issue.