people who say those sorts of things are generally trying to deal with their own issues, n-kuroi, although i'm not intending to put your parents down.
you are a person in your own right. what your parents say to you is often in their "job description" if they are the sort of people who need to put you down to make themselves feel better.
how old are you? that can make a difference - many, many people go through phases of change, when they outgrow their old friends.
hang on in there, hon - there are plenty of people on here who want to listen and to help, if possible.
Vivi