I've heard this same sentiment echoed many times, especially by women. I started getting tattooed the minute (ok, a month or so later) after I turned 18.. without getting too sentimental, I think that in a way it did help me figure myself out, even if for the first four or five, I didn't really know what I was getting in to. I've never had to grapple with any body issues but internally.. it seemed to level me out a bit, if that makes sense.
Glad your changing skin is literally changing your life!