Personally I wouldn't get anything to remind me of self harm because when I'm 50, do I really want to remember what I did? Also people are going to ask you the meaning of your tattoo...so think about if you want to talk about self harm openly with people. If you don't mind about those things, then I'd just get the ribbon. My reasoning for that is quotes grow really old and really cliche really fast half the time. So if you do get a quote, make sure you're positive you're not going to get tired of it.
I'm sure it'll look great
