Not math, but math adjacent (epi). I am HUMILIATED by my thesis. I was working with a mathematical epi professor, and I was having so much trouble fitting a model to our data with zero guidance. Emphasis on zero guidance. Prof wanted to publish it though, so as soon as I graduated (with a shitty thesis) he got a math/stats professor to come help and figure out how to model the data. Published now, but so different than the original thesis. I’m embarrassed because I knew my methods were shit when I wrote the thesis, but had no help. But you look at the final product and think “wow that’s so much better/more appropriate.” So embarrassing.