I don't actually KNOW what my "highest weight ever" is/was because I didn't want to know at the time and never weighed myself. I suspect I hit 200 lbs my senior year in college. When I graduated, I decided to exercise and eat better and lost some weight, but again, I don't know how much I lost because I had never weighed myself at the "start."
So my 3FC "starting weight" is 189 lbs because that's how much I weighed on my 30th birthday -- the day I decided once and for all to DO THIS and GET IT DONE permanently and walked into a gym. LOL, even THEN I didn't know how much I weighed! On the day I started this final journey, my personal trainer weighed me and I yelped "I don't wanna see!! Don't tell me!!!"
And it wasn't until about 8 months later that I asked her to tell me what my starting weight had been so I could see how far I'd come.