What to write on my wall?

So, I'm a 14 year old girl and I'm trying to redecorate my room. I'm planning on writing something on my wall real big in either photos, magazine clippings, newspapers, or something like that. I just have absolutely no idea what to write. I think I might do one wall with one big word (stuff like hope, love, etc.) and another wall with either a song lyric or a quote. I just need ideas!