Some good, cute quotes for an older sister/role model? ?

I have a friend who is two years older than me, and she's been a role model for me for a long time. She's become like an older sister to me; leading me in faith, and helping me get through problems in high school. I have to do her senior speech for a cross country banquet we have coming up and I wanted to open with a really sweet, sentimental quote. Any suggestions?