I got a tattoo to celebrate my weight loss last June 2005. I never considered myself "hip" or "cool" enough for a tattoo (I was in the CHESS club in high school for god's sake) and there was never anything that meant so much to me I would want to tattoo it forever on my skin.
Losing 70+ lbs and feeling fabulous was definitely something I wanted to celebrate forever, to remind myself how hard I worked and something to remind myself every day that losing weight is much easier than keeping weight off.
I also thought about a pheonix or a butterfly or a bluebird of happiness. I started looking into Japanese characters, I wanted something that said "transformation" but when I started talking to Japanese speakers, it wasn't that simple.
A Chinese friend turned me onto Chinese proverbs. I found a bunch I loved and I picked my favorite saying that also had the most beautiful characters. My tattoo is 4 traditional Chinese characters of an old Chinese proverb "Dripping water eats through stone." Just to remind me of the hundreds of tiny changes I made and do on a daily basis to accomplish something enormous. Even a tiny drop of water can wear away a rock.
Here is one of the sites I used (where I eventually found my proverb):
http://www.oneaday.org/archives.html
Just a note, the native speakers I asked for advice, did not like this font at all ("it's like a typewriter") so I also researched and found a more beautiful font.
Here is a link my tattoo gallery (to see my decision making process and final result, final result is on page 2):
http://gloriana.myphotoalbum.com/vie...album03&page=1
I saw this one after I got mine, I love it! (I probably would have gotten this if I had seen it before mine).
http://www.oneaday.org/2005/08/heave...e_changed.html
Good luck on your tattoo, I still adore mine. I definitely wanted a permanent reminder of how important this weight loss journey is, the changes I made are permanent. It basically means - don't mess this up.