DEAR ABBY: I am 13 and have an older sister who ruins our family vacations. She turns everything into an argument and makes it impossible to enjoy family time together. We're going on a two-week trip soon and I don't want it to be a disaster. How can I get my sister to behave and not start World War III? -- SISTER TROUBLES IN NEW HAMPSHIRE
DEAR SISTER: You are not responsible for your sister's behavior. Don't give her the power to spoil your vacation. When she acts out, distance yourself and tune her out. It appears you are more mature at 13 than she is.
If things do not improve soon, suggest to your parents that you ALL get to family counseling. It will be an opportunity to express your feelings with a professional therapist who will listen and help to improve your family's interaction.